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Test 4 Notes spinal definitions only
def spine lecture notes (10)
62
Anatomy
Undergraduate 1
11/08/2009

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Term
contributes to homeostasis by provididng quick responsis to stimuli
Definition
spinal cord and spinal nerves
Term
function as highways for nerve impulse propagation
Definition
white matter tracts
Term
has 2 main functions, nerve impulse propagation, info integration _____
Definition
spinal cord
Term
make up the different regions, columns surrounding the gray matter, ______
Definition
white matter tracts
Term
receives and integrates incoming and outgoing info,______
Definition
gray matter
Term
three conntective tissue coverings that encircle the brain and spinal cord, ______
Definition
meninges
Term
2 types of connective tissue coverings that protect the spinal cord, _____
Definition
bony vertebrae, meninges
Term
contains a cushion of fat and connective tissue, _____
Definition
dura mater
Term
contains interstitial fluid, ________, the middle meninx, avascular covering
Definition
arachnoid mater
Term
consists of interlacing bundles of collagen fibers and some fine elastic fibers, _______, the innermost meninx
Definition
pia mater
Term
______ receives and integrates incoming and outgoing information
Definition
gray matter
Term
____, help with the integration of sensory info in the CNS
Definition
Interneurons (association neurons)
Term
____ surrounds the gray matter, primarily bundles of myelinated axons of neurons
Definition
white matter
Term
forms the crossbar of the H,______
Definition
gray commissure
Term
Contains cerebral spinal fluid_______, located in the center of the gray commisure and extends the entire length of the spinal cord
Definition
central canal
Term
clusters of cell bodies in the gray matter of the brain and spinal cord are _____
Definition
nuclei
Term
______ receive input from receptors via sensory neurons
Definition
sensory nuclei
Term
______ provide output to effector tissue via motor neurons
Definition
motor nuclei
Term
regions of gray matter on each side of the spinal cord, ____
Definition
gray horns
Term
axons that conduct impulses toward the brain, _______
Definition
sensory (ascending) tract
Term
axons that carry impulses down the spinal cord
Definition
motor (descending) tracts
Term
how does the spinal cord promote homeostasis
Definition
by conducting impulses along tracts
Term
how is the name of the tract descriptive
Definition
indicates position and where it begins and ends
Term
How many pairs of nerves?
Definition
31 pairs of mixed nerves, motor and sensory fibers
Term
axons of multipolar motor neurons, located in gray matter, ________
Definition
anterior (ventral)
Term
name 3 connective tissue coverins of spinal nerves
Definition
endoneurium, perineurium and epineurium
Term
the ______ is the innermost layer which wraps individual axons
Definition
endoneurium, myelinated or not
Term
wraps fasicles, bundles of axons,______
Definition
perineurium
Term
the innermost layer of spinal nerves is _______
Definition
endoneurium
Term
the superficial covering of the entire nerve is the ________
Definition
epineurium,
Term
a branche of a nerve is?
Definition
singular=ramus, branches=rami
Term
serves deep muscle and skin of the dorsal trunk
Definition
posterior (dorsal) ramus
Term
serves muscles and structures of the limbs and skin of lateral and ventral surfaces of trumk
Definition
anterior (ventral) ramus
Term
supplies the vertebrae,, vertebral ligaments bl vessels of the spinal cord and meninges
Definition
meninegeal branch
Term
components of the autonomic nervous system, ______
Definition
rami communicantes
Term
a network of nerves veins or lymphatic vessels
Definition
plexus
Term
name 5 principal plexuses
Definition
cervical, brachial lumbar, sacral coccygeal
Term
the ___ supplies the skin and muscles
Definition
cervical plexus
Term
the phrenic nerves arise from the _____ and supply motor fibers to the diaphram
Definition
cervical plexus
Term
the _____ provide the entire nerve supply of the shoulders and upper limbs
Definition
brachial plexus
Term
5 important nerves arise in the brachial plexus
Definition
axillary nerve, musculocutaneous, radial, median ulnar
Term
the _____ supplies the deltoid and teres minor
Definition
axillary nerve
Term
the ________ supplies the flexors of the arm
Definition
musculocutaneous
Term
the _______ supplies most of the muscles of the anterior forearm and some fo the hand
Definition
median nerve
Term
the ______ supplies the muscles of the posterior aspect of the arma nd forearm
Definition
radial nerve
Term
the _____ supplies the anteromedial muscles of the forearm and most of the muscles of the hand
Definition
ulnar nerve
Term
the _____- supplies he anterolatera abdominal wall, ext genitals and lower limbs
Definition
lumbar plexus
Term
the largest nerve in the body
Definition
sciatic nerve
Term
the area of skin that provides sensory input to the cns via one pair of spinal nerves that aids dr in nerve damage to the spinal column is _____
Definition
dermatones
Term
____ in the spinal cord are highways for nerve impulse generation
Definition
white matter tracts
Term
sensory ascending tracts
Definition
propagate impulses from sensory receptors up the spinal cord to the brain and are part of the somatic sensory pathway
Term
motor descending tracts propagate
Definition
impulses from the brain down the spinal cord towards the effectors, part of the somatic motor pathway
Term
conveys sensory impulses for pain and temperature
Definition
lateral spinothalmaic tract
Term
posterior columns carry impulses for
Definition
proprioception, discriminative touch, 2 pt discrimination, light pressure sensations, vibration sensation
Term
the perception of the position of body parts esp limbs independent of vision
Definition
proprioception
Term
the recognition of the location shape size and texture of mechanical obj that contact skin
Definition
discriminnitive touch
Term
ability to discern that two nearby obj touching the skin are truly 2 distinct pts
Definition
2 pt discrimination
Term
a ribbon like tract that extends from the medulla to the thalamus
Definition
medial lemniscus
Term
ability to recognize size shape and texture of an object by touching
Definition
stereognosis
Term
awareness of the precise position of body parts
Definition
proprioceeption
Term
precise vol movements of limbs hands and feet
Definition
direct pyramidal pahtways
Term
precise vol movements of limbs hands and feet
Definition
direct pyramidal pahtways
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