exam 4

Question 1

Connective tissue that encircles a cluster of axons(nerve fascicle)

Answer 1

Perineurium

Question 2

Functions of astrocytes (ALL)

Answer 2

-support
-BBB
-regulate glutamate cytotoxicity

Question 3

Short distance signals between neurons

Answer 3

Graded potential

Question 4

What are the two enteric ganglia

Answer 4

submucosal plexus
myenteric plexus

Question 5

main extracellular cation

Answer 5

sodium (Na2+)

Question 6

main extracellular anion

Answer 6

Chlorine (Cl-)

Question 7

main intracellular cation

Answer 7

potassium (K+)

Question 8

THREE OUT TWO IN

Answer 8

3 Na+ out and 2 K+ in

Question 9

Nernst Equation significance

Answer 9

relationship of electrical and chemical forces acting on any ionic species across a semipermeable membrane

Question 10

Neural tube in spinal cord development turns into what two structures

Answer 10

brain and spinal cord

Question 11

Structures that make up developmental gray matter include…

Answer 11

Alar plate (dorsal, sensory)
Basal place (ventral, motor)

Question 12

Neural crest cells develop from neural groove and develop into

Answer 12

Sensory neurons, adrenal medulla, sympathetic postganglionic neurons, etc

Question 13

Which autonomic division is the lateral horn T1 to L4/5 (spinal cord)

Answer 13

Sympathetic

Question 14

What are the two categories of Spina Bifida

Answer 14

Occulta, Aperta

Question 15

Dura mater surrounds ________ sinuses

Answer 15

venus

Question 16

Where in the lateral ventricles is CSF made

Answer 16

Choroid Plexus

Question 17

What spinal cord segments make up the lumbar cistern sampling site

Answer 17

L5-7

Question 18

Describe flow of CSF rostral to caudal

Answer 18

lateral ventricle –> interventricular foramen to 3rd ventricle –> mesenphalic aqueduct to fourth ventricle then central canal to spinal cord OR different paths to SAS

Question 19

In the brain, what absorbs the most CSF in the SAS

Answer 19

Arachnoid villi

Question 20

Where are small NTs made

Answer 20

in the presynaptic (axon) terminal

Question 21

neuropeptide NTs are made in the

Answer 21

cell body (bc req peptide bond formation)