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Exam 2 EndChap2/Chap3
LSU Physiological Psychology Nervous System
197
Philosophy
Undergraduate 4
09/27/2013

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Term
factor determining nature of post-synaptic potential in a synapse
Definition
the type of ion channel that receptor opens
Term
inhibitory post synaptic potential
Definition
Receptor causes K channels to open
Term
region where nt molecules exit from a post-syn cell into synapse
Definition
the release zone
Term
neural integration
Definition
interaction of excitatory and inhibitory synapses on a particular neuron. depolarization much be strong enough by the time it reaches the axon hillock to fire.
Term
Prevention of nt from staying in synaptic cleft
Definition
transporter molecules force nt back into cytoplasm
Term
brain has twice as many neurons as an adult brain-what is it?
Definition
brain of embryo
Term
when do you see a structure in a human embryo that could be called a brain
Definition
28 days after conception
Term
brain that is smooth with no grooves has how much surface area compared to real brain
Definition
1/3 the amount of surface of normal
Term
person with trouble drawing maps or following them has dmg to?
Definition
somatosensory assoc. cortex
Term
strongest evidence for learning to change structure of brain
Definition
evidence of neurogenesis is seen in the hippocampus, the area of brain involved in learning
Term
frontal lobe
Definition
anterior portion of cortex rostral to parietal and dorsal to temporal
Term
pia mater
Definition
layer of meninges that clings to the surface of the brain thin and delicate
Term
spinal nerve
Definition
peripheral nerve attached to the spinal cord
Term
ventrolateral nuclues
Definition
nucleus in thalamus
receives inputs from the cerbellum
sends axons to the primary motor cortex
Term
cauda equina
Definition
bundle of spinal roots located caudal to the spinal cord
Term
action potential to terminal buttons then what happens?
Definition
voltage gated channel in pre-syn floods ca+ in as catalyst creating biochemical reaction. then vesicles of nt to to pre-syn. wall and vesicles fuse and release there contents by exocytosis.
Term
most common type of terminal button connection.
Why most common?
Definition
axodentritic because of large surface area on dendritic spine and dendrite
Term
types of terminal button synapse
Definition
axodendritic
axosomatic
axoaxonic
dendrodentritic
Term
function and locale of dendrodentritic synapse
Definition
common between dendritic field
not mediated by nt but electic
Term
what happens when vesicles fuse to pre-syn membrane
Definition
surface area increase on pre-syn wall and portions of membrane near top of terminal button and reuses the membrane for new vesicles
Term
what causes nt to move across
Definition
diffusion across fluid filled cleft
Term
how did earlier scientists reason a chemical step was involved
Definition
due to the speed of effects of nt
Term
quantal discharge
Definition
nt released in pulses
Term
primary structures located in cytoplasm of terminal button
Definition
mitochondria (button needs energy) and synaptic vesicles

and microtubules which transport btw soma and button
Term
post-syn membrane thicker?
Definition
because of protein receptors than accept nt and protein filaments that hold receptors in place
Term
receptors in post-syn membrane
Definition
ionotropic
metabotropic
Term
ionotropic
Definition
direct method
protein then binds nt that opens or closes similar to earlier. faster than metabotropic
Term
metabotropic
Definition
indirect method
not an ion channel.
nt binds then the G protein(inside membrane next to receptor) is activated which causes an enzyme to trigger the production of sec. messenger(cAMP) which cause ion channels in vicinity to open or close.
biggest response and longest lasting
Term
second messenger
Definition
acts as a catalyst to do biochemical like turning genes off or on which terminates production of certain proteins
Term
post-syn potential
Definition
translation of biochemical to electrical with excitation or inhibition
Term
epsp
Definition
excitatory post-syn potential
na+ into cell
Term
ipsp
Definition
inhibitory post-syn potential
K+ leave cell
Term
effect of CL- channels
Definition
during resting potential nothing happens due to diffusion and pressure.
during depolarization the channel serves to neutralize the epsp.
Term
how to get soma to transmit another signal
Definition
positive ratio of epsp to ipsp
Term
difference in nt channel and voltage channel
Definition
nt gated don't follow cable conduction properties. no refractory period. the greater the nt the more affect/effect
Term
characteristics making axon hillock fire
Definition
spatial summation: different inputs production more stimulus
temporal summation: time causing more firing on an input
Term
termination of post-syn potential
Definition
reuptake
enzymatic deactivation
Term
reuptake
Definition
terminal buttons have transporters than pump nt back into cytoplasm
Term
enzymatic deactivation
Definition
an enzyme destroys molecules of the nt i.e. breaks it apart into parts that don't bind
Term
autoreceptors
Definition
a receptor molecule located on a neuron that responds to the nt released by that neuron.
located on the membrane on any part of cell like on terminal button.
don't usually produce changes in membrane potential.
regulate internal processes including synthesis and release of the nt.
they are metabotropic
most are inhibitory.
Term
axoaxonic synapses
Definition
-not directly contribute to neural integration.
-alter the amount of nt released by the terminal buttons of the post-syn axon
-presyn modulation
-presyn inhibition
-pre-syn facilitation
Term
pre-syn inhibition
Definition
decreases the release of nt of the button it is attached to
Term
pre-syn facilitation
Definition
increases the release of nt
Term
neuromodulators
Definition
chemicals released by neurons that travel farther and are dispersed more widely than are nt.
-are peptides i.e amino acids linked by peptide bonds
Term
CNS
Definition
brain- cranial nerves (head and neck)
spinal cord- spinal nerves (come of spinal cord)
Term
neuraxis
Definition
imaginary line dividing body. running from forehead to base of spine
Term
anterior or rostral
Definition
front of brain
front of face
Term
posterior or caudal
Definition
toward tail or feet
Term
ventral or inferior
Definition
base of brain or chest
Term
dorsal or superior
Definition
top of brain and head and back
Term
medial
Definition
toward the middle
toward neuraxis
Term
lateral
Definition
toward outside
away from neuraxis
Term
ipsilateral
Definition
right arm is ipsilateral to right leg
Term
contralateral
Definition
right arm is contralateral to left arm
Term
bilateral
Definition
both sides
Term
decussate
Definition
point the axon crosses midline to contralateral side in reference to right brain controlling left side of body
Term
afferent
Definition
toward a referent like toward cns
Term
efferent
Definition
away from a referent
Term
difference btw nerve and tract
Definition
both are collection of axons with nerve in pns and tract is in cns
Term
white matter
Definition
neural tissue unpreserved
color is cuz of high lipid in myelinated axon
Term
grey matter
Definition
neural tissue unpreserved
color is cuz of no myeline
lots of soma
Term
when do neurons become pns or cns
Definition
when neurons leave bone of cns they are pns
Term
effectors
Definition
special cell evolved to act.
glandular cell.
auto and somatic regulate it.
three types:
skeletal(limbs move);
cartiac(heart),
smooth muscles(wall of uterus, hair folicles, in eye)
Term
skeletal effectors
Definition
controlled by somatic
physical behavioral response
Term
smooth muscle and cartiac and glands
Definition
controlled by autonomic
skin temp, blood pressure, emotional
Term
glands
Definition
can be inhibited or enhanced.
sympathetic(energy using) or parasympathetic (energy conserving)
Term
motor systems
Definition
efferent neurons to same muscle group producing different effects due to what system it goes through i.e. pyramidal or extra pyramidal.
Term
pyramidal
Definition
in medulla
shaped like pyramid
neurons in motor system go through it
fine motor skills
bigger than other animals
dominate in us
regulated by cortex
last to develop in children
develops into early adulthood
goes got smaller group muscles
Term
extra pyramidal
Definition
don't go through pyramidal
phylogenetically oldest (first things babies can do-not fine motor skills. brain dmg patients can still stand up. doesn't need cortex access)
Term
special muscle groups
Definition
-like pyramidal
-small muscle groups doing highly skilled actions like moving eyes.
-they leave brain through cranial nerves and go to head and neck and bypass the pyramids
Term
sensory systems
Definition
fibers are in still in autonomic by are moved to somatic because they are sensory.

vision
audition
olfaction
gustation
somesthesis (proprioception &stereognosis;pain&temperature;light touch)
Term
proprioception
Definition
carried in same pathway as stereognosis.
our ability to know where are limbs are in 3d
receptors exist in muscles, tendons and joints and in inner ear(gravitational force or force from movement)
Term
stereognosis
Definition
carried in same pathway as proprioception.
know what 3d items is by touch only
Term
pain&temperature
Definition
same pathway carry both things. same type of receptor
Term
light touch
Definition
ability to detect minute contact w/o reference to pressure sensors. the hair helps. and our skin is ridged and it increases sensibility to changes in texture
Term
frontal-coronal transverse plane
Definition
dorsal to ventral - perpendicular to ground- from posterior or anterior face
Term
sagittal plane
Definition
anterior to posterior-perpendicular to ground-divides brain into halves-separate medial from lateral
Term
horizontal plane
Definition
anterior to posterior-parallel to ground-as seen from above or beneath
Term
meninges in how many layers in cns
Definition
3
Term
meninges in how many layers in pns
Definition
2-no arachnoid layer, so don't have to circulate csf
Term
meninges
Definition
protective tissue.
first layer is dura mater
Term
periosteum
Definition
hold skin in place. layer above bone
Term
dura mater
Definition
first layer in meninges
hard to make out brain at this level
can't tear by hand
the skulls inner periosteum
two layers of dura mater and one separates and creates cavity called venus sinus
Term
arachnoid membrane
Definition
arachnoid trabeculae protrude from it.
Term
pia mater
Definition
closely attached to brain and spinal cord, and following surface convolution.
extracellular fluid is under pia mater
Term
subarachnoid space
Definition
btw pia mater and the arachnoid membrane filled with cerebrospinal fluid
Term
lateral ventricles
Definition
two of them.
largest
produces greatest amounts of csf
Term
third ventricle
Definition
located at the midline , its walls divide the surrounding part of the brain into symmetrical halves
Term
fourth ventricle
Definition
cerebral aqueduct runs the mid-line an connects to fourth ventricle underneath the cerebellum.
Term
csf fluid and development of spinal cord
Definition
central channel for csf before 20 yrs.
after 20 csf leaves sides of 4th ventricle
Term
location of csf
Definition
most is in sub-arachnoid space but some is in ventricles
Term
cerebral aqueduct
Definition
at mid-line is cerebral aqueduct that carries csf to fourth ventricle then csf flows down spinal cord
Term
massa intermedia
Definition
bridge of neural tissue that crosses through the middle of the third ventricle serving as reference
Term
choroid plexus
Definition
creates csf in all ventricles
how? blood pressure from tissue in capillaries forces plasma like across semi permeable membrane.
Term
cerebrospinal fluid
Definition
protect brain from inertia
support brain by lessening force of effective weight of brain (1400g->80g)
Term
mid sagital fissure
Definition
also called mid cerebral
spilts the brain into two "hemispheres"
Term
right above corpus callosum
Definition
first original cortex that evolved
Term
what gives color of cortex
Definition
cell bodies on top of cortex
Term
brain stem
Definition
remove cortex and cerebellum and you have brain stem.
-maintenance of life like aggression and food intake and mating
Term
cerebral cortex
Definition
most visible
-large % of total weight (40%)
Term
used to form landmarks in brain
Definition
sulci
fissures
gyri
2/3 of cortex isn't visible
Term
sulci
Definition
smaller grooves
Term
fissures
Definition
deeper grooves
Term
gyri
Definition
ridges
Term
neocortex
Definition
6 layers
Term
lateral sulcus function
Definition
separates frontal from temporal and temporal from parietal also called sylvian fissure
Term
central sulcus
Definition
fissure of rolondo
separate frontal from parietal.
splits the primary motor cortex from the primary somatosensory cortex
Term
a notch on bottom caudal area of cortex
Definition
separating occipital lob from parietal
Term
primary motor cortex
Definition
also known as pre central gyrus on caudal end of frontal lobe.
-topographical organization
Term
motor association cortex
Definition
-programs movement by retrieving info
-the further you move anterior on the association cortex the move removed movement is from the primary motor cortex.
-broca's area is anterior to the tongue section of the prim. motor cortex
-planning gets worse if you dmg the anterior pole.
Term
motor systems
Definition
pyramidal
extra pyramidal
special muscle groups (in cranial nerves)
Term
autonomic ns
Definition
sympathetic
parasympathetic
Term
somatic ns
Definition
motor systems
sensory systems
Term
sections of brain
Definition
myelencephalon
metencephalon
mesencephalon
diencephalon
telencephalon
Term
sections of spinal cord
Definition
cervical (skull)
thoracic
lumbar
sacral
coccygeal(tail)
Term
primary somatosensory cortex
Definition
also called post central gyrus
-senses of awareness of body
Term
somatosensory assoc. cortex
Definition
damage to:can't tell what is in hand (agnosia). the further posterior damage the harder to navigate 3d space.
Term
area at most posterior of lateral sulcus
Definition
visual and auditory linked with memory.
wernicke's area. fluent meaningless afasia if damaged.
Term
primary audition cortex
Definition
superior temporal gyrus inside lateral fissure.
-auditory agnasia:can't tell perception of sound
Term
association cortex
Definition
involved with integration of several input
Term
neural tube
Definition
origin of cns.
-hollow
-closed at rostral end
Term
three major parts of brain
Definition
forebrain
midbrain
hindbrain
Term
forebrain
Definition
divides into three parts which become 2 lateral ventricles and third ventricle then the region around the lateral ventricles becomes the telencephalon (end brain) and the region around the third ventricle becomes the diencephalon(interbrain)
Term
midbrain
Definition
-mesencephalon
-in final form chamber becomes narrow forming the cerebral aqueduct
Term
hind brain
Definition
surrounds the fourth ventricle
metencephalon(afterbrain)
myelencephalon (marrowbrain)
Term
progenitor cells
Definition
cells of the ventricular zone that divide and give rise to cells of the cns
Term
ventricular zone
Definition
layer of cells that line the inside of the neural tube;contains progenitor cells
Term
symmetrical division
Definition
division of each progenitor cell produces two new progenitor cells
Term
asymmetrical division
Definition
progenitor cells form two different kinds of cells as they divide: another progenitor cell and a brain cell
Term
radial glia
Definition
first brain cells produced
-cell bodies extend fibers from ventricular zone radially outward
-fibers end at pia mater as feet and keep attached and grow
-during apoptosis, some die and some become astrocytes or neurons
Term
apoptosis
Definition
chemical signal for progenitor cells to die
Term
telencephalon
Definition
cerebral cortex
basal ganglia
limbic system
Term
diencephalon
Definition
thalamus
hypothalamus
-on either side of third ventricle
-make up wall of ventricle
Term
mesencephalon
Definition
tectum
tegmentum
-cerebral aqueduct splits the above two
Term
metencephalon
Definition
cerebellum
pons
Term
myelencephalon
Definition
medulla oblongata
Term
uncus
Definition
primary projection of olfaction.
-juts out on ventrical side of medial temporal lobe
Term
primary visual cortex
Definition
if damaged then visual field is effected in both eyes.
located in occipital lobe in midline fissure (calcarine fissure)
Term
scotoma
Definition
blindness in visual field
Term
what is system is largest of cortex
Definition
visual system
Term
visual association cortex
Definition
can't tell what you saw if you have damage to it. and can be highly specific to visual things you can or can not recognize
Term
left hemisphere function
Definition
analysis of info
-recognize events that occur one after another and controlling these
Term
right hemisphere
Definition
synthesis
-putting isolated elements together to perceive things as a whole
-read maps
Term
basal ganglia
Definition
collection of subcortical nuclei which lie beneath the anterior portion of lateral ventricles.
-involved with movement
-caudate nucleus
-putamen
-globus pallidus
-highly processed/integrated info of body and environment. mainly extra pyramidal motor system(control of it originates here)
Term
limbic system
Definition
-surrounds the brain stem inside brain
-next gen in evolution. motivation and emotion
-helps us living in groups and develop sociality like maintaining aggression
-hippocampus
-amydala
-septum
-fornix
-mammillary bodies
-limbic cortex
Term
hippocampus
Definition
-next to lateral ventricle under temporal lobe
-acquisition of memory
-remove this and never form long term memory
Term
amygdala
Definition
-attached to hippocampus
-regulates emotional experience(activation and expression of emotion)
-process happens more on right side;detecting nuanced emotional expression of others
Term
septum
Definition
-close to midline
-a wall separated lateral ventricles
-regulate expression of some reaction (impulse control)
Term
fornix
Definition
arching axons
info from hippo to hypot
can initiate actions
Term
mammilliary bodies
Definition
-part of hypothalamus
-wide variety of regulation (aggressive and maternal behavior)
-fornix connects hippocampus with mam. bodies.
Term
limbic cortex
Definition
-above corpus callosum but not neocortex
-more primitive with four layers and first to evolve
-able to do most detailed processes like integration (waiting for right social context to speak)
-prominent input from olfactory system
-used to be called nose brain
Term
thalamus
Definition
-the biggest section of diencephalon
-divided into distinct nuclear groups that are connected to distinct groups of pns (projection fibers)
-cortical routing info to correct part of cortex (ever sense routed except olfaction)
-sensory nuclei are unique for each sensory system
-motor nuclei
-assoc. nuclei-from multiple systems
-non specific nuclei- poly modal info is transmitted to nuclear groups within thalamus and nuclear groups around thalamus
-has crude consciousness like responding to pain and audition
Term
hypothalamus
Definition
-below thalamus
-form floor and walls of third ventricle
-critical for survival like behavior like maternal behavior and eating
-four f's:fighting, fucking, fleeing, feeding
-principal autonomic and endocrine system control
-where hormones are produced
-special system of blood vessels directly connects hypothalamus to anterior pituitary gland
-hypothalamus produces the posterior pituitary gland hormones and directly controls there secretion
Term
massa intermedia
Definition
bridge of gray matter
pierces middle of third ventricle
Term
optic chiasm
Definition
just in front of pituitary stalk.
half of axons in the optic nerves from the eyes cross from one side of the brain to the other
Term
neurosecretory cells
Definition
located near base of pituitary stalk
-specialized neurons that secrete hypothalamic hormones that stimulate the anterior pituitary gland to secrete its hormones
Term
how hypothalamus monitors endocrine system
Definition
-input from many sources (neurons)
-rich blood supply to monitor
-osmocepters:respond to osmolarity (how much fluid in blood i.e. as we lose water, protein is left behind it makes blood have a high osmodic force which draws water in) so these receptors may make u drink water
-chemoceptors:chemical monitors of blood; blood level of hormones
-thermoceptors- monitor temp of blood. can cause change in distribution of blood; can repress metabolic rate
Term
types of glands
Definition
exocrine
endocrine
Term
exocrine
Definition
out/release-packets of secretory cells connect by a duct to surface of body or hollow organ in body
examples
sebaceous(oil for skin)
sweat
tears
salivary
prostate
gall bladder
pancreas(releasing into digestive tract)
Term
endocrine
Definition
-inside secreting-ductless glands surrounding by capillary cells so exocytosis to blood
-examples:
gonads(ovaries and testes)
adrenal gland
thyroid
pancreas(insulin into blood)
Term
pituitary gland
Definition
endocrine control
separate pocket of bone encases gland
Term
anterior pituitary gland
Definition
-releases growth hormone
-adrenocorticotropic(acth)
-thyroid stimulate hormone
-prolactin
-gonadotropic
follicle stimulating hormone
Luteinizing hormone
Term
adrenocorticotropic
Definition
-ACTH
-stimulates cortex of adrenal gland
-outer covering of adrenal regulates amount of glucose or salts excreted in urine
-also sex hormones
Term
thyroid stimulating hormone
Definition
thyroxine
-increase metabolic rate of all cells except gonads and adult brain
-w/o-symptoms are depression, poor cold tolerance, not comfortable body temp.,retard in infants
Term
prolactin
Definition
-promotes lactation
-generate cells to produce milk
-works with estrogen
-suppresses ovulation
Term
gonadotropic
Definition
-stimulates development of cells in ovaries and testes contents
-stimulate production of gametes
Term
posterior pituitary gland
Definition
anti diuretic hormone
oxytocin
Term
anti diuretic hormone
Definition
how much water in kidneys? then extract from blood to urine
-lose water in blood; so blood vessels constrict to make pressure go up
Term
oxytocin
Definition
-activation of smooth muscles in uterus
and around secretory cells of breasts
i]contraction of milk producing cells so milk leaves breasts
ii]strengthening and prolonging contraction of uterus
Term
nucleus vs ganglion
Definition
collection of cell bodies;integrating info
-nucleus is in cns
-ganglion is in pns
Term
superior saggital sinus
Definition
runs posterior to anterior in the saggital space.
Term
venus sinus
Definition
contains blood that leaves head to heart
Term
muscle memory-which strutures
Definition
association motor cortex and cerebellum
Term
anterior vs posterior pituitary gland
Definition
-different classes of tissue
-skin cells connected by blood supply on anterior and most secretion and bigger- adenohypophysis
-posterior is neural connections- neurohypophysis
-hypothalamus controls pituitary by blood
-both have there hormone manufactured in hypothalamus and goes to blood stream
-anterior localized blood stream release
-posterior release in general blood system
Term
hypophysis
Definition
anterior and posterior pituitary gland
Term
hypothalamic hormones
Definition
-one for every one released in pituitary
-excitatory/releasing and inhibiting(somatostatin)
Term
hypothalmic-hypophyseal portal system
Definition
the hypothalamus and hypophysis system of releasing hormones
Term
tegmentum
Definition
-covering
-periaqueductal gray matter
-reticular formation
-red nucleus and substantia nigra
-cranial nerve 3(eye movement) and 4(muscle for the eye)
Term
periaqueductal gray matter
Definition
-surrounds the cerebral aqueduct as it travels from the third to fourth ventricle
-receptors for species type behavior
-receptors for opiates
-pain transmission pathways
Term
reticular formation
Definition
-net like
-occupies core of brain stem, from the lower border of the medulla to the upper border of the midbrain
-effect on arousal and sleep- activate cerebral cortex for muscle tonus
Term
red nucleus
Definition
-part of motor control
-extra pyramidal
-bundle of axons constitutes one of the two major fiber systems that bring motor info from the cerebral cortex and cerebellum to spinal cord
Term
substantia nigra
Definition
-part of motor control
-extra pyramidal
-black substance(melanin)
-the color is from the waste of producing dopamine
-axons project to caudate nucleus and putamen
Term
-nigrostriatal
Definition
(from nigra to striped cells(corpus striatum)
-muscle tone goes up and caudate nucleus gets dopamine and it regulates so your limbs don't get restricted
-if damage to nigra person gets parkinson's so person's body gets tight and has tremors. extra pyramidal function is hurt
-chewing gum will help person because they are willfully moving jaw
Term
tectum
Definition
-the bulge on the brain stem
-superior and inferior colliculi
-one of places brain evolved to
Term
superior and inferior colliculi
Definition
-name for both together-corpora quadrigemina- bodies of 4 twins
-final detail process of visual(superior-which allows for sight of colors and shapes and movements) and audition(inferior-which allows for location of sound) in sub human
-in human this process is spinal reflex like hearing sound and flinching
Term
cerebellum
Definition
-nuclei recieve projections from the cerebellar cortex and then send projections out of the cerebellum to other parts of the brain
-superior, middle, and inferior peduncles connects cerebellum
-facilitates smooth performance of behavior
-from medial to lateral primitiveness moves to more advanced process(mammalia)
- ours is more lateral
-towards medial (archicerebellum) is first to evolve and this is entire cerebellum for fishes
-next to evolve is paleocerebellum
-next is neocerebellum
Term
superior peduncle
Definition
midbrain to cerebellum
Term
middle peduncle
Definition
connects pons and cerebellum
-majority of information passes through here
-connects to neocerebellum
Term
inferior peduncle
Definition
cerebellum with medulla oblongata connection
Term
archicerebellum function in humans
Definition
connected to brain via inner ear so we can do big movements like counteract gravity
if damaged then can't maintain posture or walk or sit
Term
paleocerebellum
Definition
necessary for land creatures to walk and for limbs to coordinate and other unskilled behavior
Term
neocerebellum
Definition
only in mammalia and dominate part in us and responsible for learned actions
-the size of neocerebellum follows and is followed by the size of the pons and cortex(they are joint processors)
Term
if damage to cerebellum
Definition
-rapid opening and closing of hands can't be done
-moving wrist from palm to top of hand
-past pointing -close eyes and try to touch nose and person misses
Term
pons
Definition
-contains portion of reticular formation including some nuclei important for sleep and arousal
-looks like a bridge connecting 2 parts of cerebellum
-only in mammalia
-fibers direct info from brain to cerebellum
-left cerebellum receives info form right brain
-cranial nerve 5-8 (relays info contra-laterally to/from cerebellum and cortex(pontine nuclei)
Term
medulla oblongata
Definition
-contains part of the reticular formation, including nuclei that control vital functions such as regulation of the cardio system, respiration, and skeletal muscle tonus
-looks like part of spinal cord
-foramen magnum is the opening where spinal cord becomes brain
-relays for body sense(somesthesis)
-cranial nerves 8-12
-nerves cross here as well
Term
lateral geniculate nucleus
Definition
receives info from the eye and sends axons to the primary visual cortex
Term
medial geniculate nucleus
Definition
receives info from the inner ear and sends axons to the primary auditory cortex
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