Deck 25: Organization of the Nervous System

Question 1

The total volume of the CSF is about

A) 3.5 mL
B) 35 mL
C) 135 mL
D) 335 mL
E) 1350 mL

Answer 1

C

Question 2

hich of the following statements about the cerebrospinal fluid is false?

A) CSF is made by ependymal cells in the choroid plexuses
B) CSF is like plasma but with lower protein concentration
C) C SF is a bs or be d b y the ara ch no id v illi
D) CSF circulates from the third to fourth ventricle through the cerebral aqueduct
E) CSF pressures hover at about 100-150 mm Hg

Answer 2

E

Question 3

Which of the following is NOT one of the five lobes of the cerebrum

A) Cing ulate lobe
B) Occipital lobe
C) Tem poral lobe
D) Insular lobe
E) Parietal lobe

Answer 3

A

Question 4

C SF co m po sitio n is

A) high in Na , low in K and ve ry low in p rote in
B) high in Na , low in K an d lik e p las m a w ith r es pe ct to pro tein
C) low in N a, h igh in K an d v er y low in p ro tein
D) Lo w in Na , hig h in K a nd like pla sm a w ith r es pe ct to pro tein
E) Like interstitial fluid in general except the protein concentration is high

Question 5

Intracranial pressure is typically about

A) 1-5 mm Hg
B) 10-15 mm Hg
C) 30-45 mm Hg
D) 60-75 mm Hg
E) 100-150 mm Hg

Question 6

Increased intr ac ra nia l pre ss ur e is da ng er ou s b ec au se it

A) Re du ces blo od flow to c ritical a reas of th e br ain
B) Reduces CSF volume
C) Increases CSF volume
D) Alte rs ac tion po ten tials dire ctly
E) Breaks the blood-brain barrier

Question 7

Which of the following are NOT part of the brainstem?

A) m idb ra in
B) m edu lla oblon gata
C) hypothalamus
D) pons
E) they all belong to the brainstem

Question 8

A gyrus in the brain is a

A) Concentration of cell nuclei within the central nervous system
B) Concentration of cell nuclei within the peripheral nervous system
C) Valley in the folds of the brain cortex
D) Hill in the folds of the brain cortex
E) Concentration of axonal processes in the central nervous system

Question 9

The central sulcus separates

A) frontal lobe from temporal lobe
B) parietal lobe from occipital lobe
C) frontal lobe from parietal lobe
D) parietal lobe from temporal lobe
E) insular lobe from temporal lobe

Question 10

Ventricles in the brain are

A) Cham bers that pump blood when they contract
B) Ho llow spa ces w ithin the bra in th at are filled w ith c ereb ros pin al fluid
C) Collections of nerve fibers (axons)
D) Collections of neuron cell bodies
E) Fille d w ith in tra ce llula r flu id

Question 11

C ra nia l ne rve s typ ica lly en ter the bra in

A) In the frontal lobe
B) In the temporal lobe
C) In the brainstem
D) In the occipital lobe
E) In the thalamus

Question 12

The "blo od b rain b arrier" refe rs to

A) La ck o f dire ct ac ces s of blo od -bo rne sub stan ces to th e br ain's inte rstitia l fluid
B) H igh res ista nc e to blo od flow with in th e b ra in
C) Im m un olo gic al c ells in th e b ra in th at c lea n u p th e b loo d b ef or e it e nte rs the bra in
D) Low blood pre ssure in the brain due to it being higher than the heart
E) Inability of thoughts to be carried in the blood

Question 13

Which of the following is NOT part of the peripheral nervous system?

A) So m atic af fere nts
B) So m atic ef fere nts
C) Au tono m ic affe rents
D) Au tono m ic effe rents
E) Spin al cord

Question 14

The brain is divided into two hemispheres by the

A) Lateral fissure
B) Lo ng itudin al fissure
C) Central sulcus
D) Sylvian sulcus
E) Corpus callosum