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Physiology-chpt. 9-11 brain/cns
chapter 9
48
Physiology
Undergraduate 2
09/30/2012

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Term
cerebrum function
Definition
perception; sketal muscle movement;direction of voluntary movement, emotion, memory and learning
Term
diencephalon function
Definition
function relay station for sensory and motor information, melatonin secretion; homostatasis, behavior drives, hormone secretion
Term
midbrain function
Definition
eye movement
Term
pons function
Definition
relay station between cerebrum and cerebellum
coordination of breathing
Term
medulla oblongata function
Definition
controls involuntary function
Term
cerebellum function
Definition
movement coordination, balancenand execution of movement
Term
How many pairs of cranial nerves
Definition
12
Term
How many pairs of spinal nerves?
Definition
31
Term
what is the membrane that covers the brain
Definition
meninges
Term
list the 3 meninges that cover the brain and spinal cord
Definition
dura mater
arachnoid
pia mater
Term
what is made in the cavities in the brain?
Definition
cerebrospinal fluid (CSF)
Term
Cerebral spinal fluid is made?
Definition
Made from blood plasma.
Term
What is the function of Cererebral spinal fluid?
Definition
-Transport route for nutrients and waste products throughout the Centeral nervous system
-provides cushing for CNS.
Term
explain the blood brain barrier
Definition

the brain contains capillaries-i.e. capillaries that do not have pores between the simple squamous epithelial cells (exchange epithelia -foot process of astrocytes create a second line of defense to prevent sunstance from the blood to easily entering CSF

TIGHT JUNCTIONS

Term
Describe the function of the frontal lobe of the cerebrum
Definition
skeletal muscle movement, cognitive functions
Term
Describe the Parietal function of the cerebrum
Definition
sensory info from skin, musclosketal system, organs and tase buds
Term
Describe the function of the temporal lobe
Definition
hearing
Term
describe the function of the occipital lobe
Definition
vision
Term
Connective area of the cerebrum-
Broca's Area
Definition
involved in speech production and Expressive aphasia
Term
Connective area of the cerebrum-
wernickle's area
Definition
involved in speech; comprehension and receptive aphasia
Term
Describe Limbic system?
Definition
Most primitive region of the cerebrum. Links complex mental process to emotional responses
Term
what does the pineal gland produce?
Definition
Melatonin
Term
Thanlmus function?
Definition
is the relay station for all sensation except smell
Term
Hypothalamus is essential for? what does it produce?
Definition
homostatic regulation. It produces oxytocin and vasopressin
Term
The hypothalamus also produces hormones that regulate the secretion of?
Definition
Anterior pituitary gland
Term
the midbrain function
Definition
controls eye movement
relay for visual and auditory signals
generate reflexive responses to stimuli
Term
Describe gray matter in midbrain and function
Definition
contains gray matter (red nucleus, substantia nigra) that are involved in control of muscle tone and posture
Term
Function on Pons
Definition
relay station to other brain region
contains centers (apneustic and pneumotaxic) involved in cordinating the control of breathing
Term
funtion of the cerebellum
Definition
Process sensory information from muscles and balance receptors in the inner ear.

Coordinates execution of movement
Term
Function of the medulla oblongata
Definition
controls involuntary functions such as breathing, swallowing, vomiting, blood bressure and heart rate.
Term
What is the responsibility of the corticospinal tract?
Definition
Responsible for connecting the motor cortex with the somatic motor neurons that activate the sketal muscles to carry out planned action
Term
the corticospinal tract is also called?
Definition
pyramidal tract
Term
describe the corticospinal tract
Definition
the decending motor pathways cross over to the opposite side of the spinal cord which is why the left motor cortex controls muscles on the right side of the body
Term
what are reflexes?

give examples
Definition
reflexes are involuntary responses to stimuli
Example:
pulling your hand away from a hot stove.
dropping a weight that is to heavy.
Decreasing your blood pressure when its to high
increasing your respiration rate during exercise
turning your head when someone calls your name.
Term
How are reflexes classified?
Definition
1. Number of neurons in the pathway
2. efferent division that controls the reflex (somatic vs. Autosomatic)
times at which the reflex develops (inate vs. learned
4. region of CNS that integrates the reflex (cranial vs. Spinal)f
Term
describe Pia mater and function
Definition
name for innermost membrane around brain and spinal cord. Function is to provide proteaction
Term
Two divisions of autonomic nervous system?
Definition
Parasympatethic
sympathetic
Term
which part of the autonomic nervous sytem causes the heart rate to increase?
Definition
sympathetic
Term
How many pairs of peripheral nerves are in the body?
Definition
12 cranial + 31 spinal = 43
Term
describe Pia mater and function
Definition
name for innermost membrane around brain and spinal cord. Function is to provide proteaction
Term
Two divisions of autonomic nervous system?
Definition
Parasympatethic
sympathetic
Term
which part of the autonomic nervous sytem causes the heart rate to increase?
Definition
sympathetic
Term
What are nerves?
Definition
collection of axons running between CNS and peripheral target cells
Term
whats found in gray matter
Definition
unmyelinated dendrites and axons terminals
Term
Names for many patterns in the CNS?
Definition
Nuclie, Center Contex
Term
Names for many matters in the PNS
Definition
Manglia
Term
Cholinengic Receptors
Definition
Nicotinic + Muocunric 
Term
Adrenergic Recptors
Definition
Alpha and Beta recptors.
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