Neurobiology Lecture 2

Question 1

T/F human with larger bodies have larger brains

Answer 1

True

Question 2

Do larger humans have the same number of neurons as a smaller human?

Answer 2

Yes, and not predictive of intelligence

Question 3

Does higher synapse number correlate with cognitive capacity?

Answer 3

no

Question 4

Skull and vertebral column provide

Answer 4

protection

Question 5

CNS is further protected as a result of being suspended within the

Answer 5

meninges

Question 6

What do the meninges do

Answer 6

encase the brain and allow it to float, bouyancy

Question 7

What are the three membranes that surround the brain

Answer 7

dura
arachnoid
pia

Question 8

Subarachnoid space is filled with

Answer 8

CSF

Question 9

T/F CSF maintains homeostasis of neuroendocrine factors by flushing out of brain into bloodstream

Answer 9

T

Question 10

Where is CSF produced

Answer 10

choroid plexus

Question 11

Lumbar ____ contains CSF below the level of the spinal cord

Answer 11

Cistern

Question 12

What is hydrocephalus

Answer 12

clog narrow portions of the ventricular system–ventricles inflate if before skull plates have fused

Question 13

Lateral ventricle to

Answer 13

cerebral hemisphere

Question 14

Third ventricle to

Answer 14

thalamus

Question 15

Cerebral aqueduct to

Answer 15

midbrain

Question 16

Fourth ventricle to

Answer 16

below cerebellum/above pons

Question 17

How are things absorbed into the bloodstream?

Answer 17

at arachnoid villae

Question 18

What does the nissl stain stain

Answer 18

rough ER purple

Question 19

Nissl stain: what does it help see

Answer 19

cell bodies; soma

Question 20

What does H and E stain

Answer 20

Hematoxylin stains cell nuclei purple blue

Eosin stains cytoplasm pink

Question 21

With H and E stain can axons and dendrites be distinguished well

Answer 21

no

Question 22

What does weigerts myelins stain

Answer 22

classic for staining myelinated tissues a dark black while leaving unmyelinated tissues pale, first developed in 1884

Question 23

How long does weigerts myelin stain take to develop

Answer 23

days

Question 24

weil stain is less ____ than weigerts

Answer 24

crisp

Question 25

Luxol fast blue stain is a method for staining

Answer 25

myelin blue, but also stains ER purple

Question 26

What is H&E stain often paired with

Answer 26

Luxol fast blue stain

Question 27

What substance does the golgi stain use

Answer 27

silver nitrate solution

Question 28

What does golgi stain

Answer 28

stained black using cell body, dendrites, spines, and axons

Question 29

What is the role of the hippocampus?

Answer 29

consolidation of memory, spatial memory, and adult neurogenesis

Question 30

All output of the hippocampus is via the

Answer 30

fornix