231 Pathophysiology Module 6 EXAM REVIEW QUESTIONS AND ANSWERS

231 Pathophysiology Module 6 EXAM REVIEW
(QUESTIONS AND ANSWERS)

1). List the 2 major divisions of the nervous system

 Ans: CNS
PNS


2). List the structures found in cns

 Ans: brain and spinal cord


3). List the structures found in pns

 Ans: spinal nerves, cranial nerves, and ganglia that are outside of the CNS.


4). What are the 3 meninges

 Ans: dura mater
arachnoid layer
pia mater


5). Pia mater

 Ans: -innermost layer
-thin and delicate
-contains surface level blood vessels that perfuse the brain and spinal cord


6). Arachnoid layer

 Ans: -second layer
-encases the entire CNS
-delicate, nonvascular, and waterproof




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, 7). Subarachnoid space

 Ans: Cerebrospinal fluid (CSF) circulates in an area just below the arachnoid layer
called the subarachnoid space


8). Dura mater

 Ans: -third layer
-strong, continuous connective tissue sheath
-provides the brain and spinal cord with most of its protection


9). Describe how csf is produced

 Ans: choroid plexus (Specialized ependymal cells) project into the ventricles and
produce CSF


10). Csf function

 Ans: -serves as a cushion for the brain and spinal cord protecting them from outside
physical force
-maintains a constant ionic environment that allows for the diffusion of essential
nutrients, electrolytes, and metabolic waste products into the extracellular fluid
surrounding the CNS neurons


11). Cranial nerve memorization trick (cni-cnxii)

 Ans: Oh
Once
One
Takes
The
Anatomy
Final
Very
Good
Vacations
Are
Had

Olfactory
Optic
Oculomotor
Trochlear



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