Anatomy

Question 1

Chromaffin cells

Answer 1

Neural crest cells -> Adrenal Medulla -> Post- Ganglionic Autonomic Neurons

Question 2

Neurulation time

Answer 2

3rd week

Question 3

Layer Nervous System derived from

Answer 3

Neuroectoderm

Question 4

Neural plate (neuroectoderm) formation induced by

Answer 4

Notochord (master inducer) -> Releases Sonic Hedgehog

Question 5

Plates in Brainstem and SC

Answer 5

Alar plate- sensory
Basal plate- motor,
Separated by sulcus limitans

Question 6

Myelination

Answer 6

Schwann cells- PNS

Oligodendrocytes- CNS

Question 7

Gastrulation location

Answer 7

Future Dorsal Midline

Question 8

Channels at nodes of Ranvier

Answer 8

Volatge- gates Na channels- Saltatory Conduction

Question 9

Only CN which is Intracranial

Answer 9

Optic Nerve

Question 10

Neural Crest Location post- neural tube development

Answer 10

Lies dorsolateral to neural tube

Question 11

Closing of Neural tube

Answer 11

Middle Portion- Day- 23
Rostral End- Day- 25
Caudal End- Day- 27

Question 12

Increase in AchE

Answer 12

Open Neural Tube Defects only

Question 13

Components of Diencephalon

Answer 13

4->

1. Thalamus
2. HypoThalamus
3. EpiThalamus (Pineal Gland)
4. SubThalamus (Basal Ganglia)

Question 14

Only part of the secondary brain vesicles that does not contain ventricle

Answer 14

Midbrain

Question 15

Which receptor controls secretions regardless of Neurotransmitter

Answer 15

Muscarinic

Question 16

Painful Horners Syndrome

Answer 16

Internal carotid artery dissection- Post- Ganglionic SN

Question 17

Pre- Ganglionic Horners Syndrome

Answer 17

Pancoast Tumor, Thoracic Outlet Syndrome

Question 18

Central Horners vs Peripheral Horners

Answer 18

Central- Tract sign +