[RECALLS] BATCH 2022 - Intro and Organization and Embryology of the Nervous System

Question 1

What germ layer does the brain/nervous system originate from:

Answer 1

Ectoderm

Question 2

What separates the supratentorial from infratentorial:

Answer 2

Tentorium cerebelli

Question 3

What is derived from the mesencephalon:

Answer 3

All of the above: Tectum, Tegmentum, Cerebral aqueduct and Cerebral peduncle

Question 4

Brainstem originates from:

Answer 4

Mesencephalon and rhomoboencephalon only

Question 5

Surgeon operating exposes cervical part of spine. How many spinal nerves expected to see?

Answer 5

8 cervical nerves

Question 6

Function of temporal lobe:

Answer 6

Hearing

Question 7

CSF is produced by:

Answer 7

Ependymal cells

Question 8

Which is supratentorial in location?

a. Parietal lobe
b. Spinal cord
c. Medulla
d. Midbrain

Answer 8

a. Parietal lobe

Question 9

Unique characteristic of type C fibers

Answer 9

Unmyelinated

Question 10

Most common cause of neural tube defects:

Answer 10

Folic acid deficiency

Question 11

Area where all 4 lobes meet:

a. Thalamus
b. Fourth ventricle
c. Pineal gland
d. Insular cortex

Answer 11

d. Insular cortex

Question 12

What day does anterior neuropore close develops into 3 primary vesicles:

Answer 12

25 days

Question 13

Important factor in organization and function of the brain:

A. genes
B. experience
C. vitamin deficiency
D. all

Answer 13

A. genes

Question 14

Best describes myelin:

A. CNS myelin by Schwann cells
B. PNS myelin by oligodendrocyte
C. Present in dendrites
D. Causes fast transport of signals in neurons

Answer 14

D. Causes fast transport of signals in neurons

Question 15

Where does the upper and lower motor neuron meet:

A. Anterior horn
B. Posterior horn
C. Lateral horn
D. Dorsomedial horn

Answer 15

A. Anterior horn

Question 16

What connects nerve fibers:

Answer 16

Synapse

Question 17

Characterstic of dendrite rather than axon:

a. one per cell
b. longer process of the neuron
c. maybe covered in myelin
d. contains Nissl bodies in cytoplasm

Answer 17

d. contains Nissl bodies in cytoplasm

Question 18

Cell body found in:

Answer 18

Gray matter

Question 19

Axons found in:

Answer 19

White matter

Question 20

Which glial cell should not be found:

Answer 20

Macroglia

Question 21

Which is not part of the peripheral nervous system:

a. muscle
b. neuromuscular junction
c. spinal cord
d. peripheral nerve

Answer 21

c. spinal cord

Question 22

What are the primary brain vesicles:

Answer 22

Prosencephalon
Mesencephalon
Rhomboencephalon