Nervous system

Question 1

Subdivision of Nervous system

Answer 1

1. Central nervous system
2. Peripheral
   2a. Sensory Division
   2b. Motor division:
   - Somatic
   - Autonomic (sympathetic/parasympathetic)

Question 2

Functional classification of neurons

Answer 2

1. Afferent / sensory neurons
2. Interneurons : entirely in CNS
3. Efferent neurons (somatic motor and 6 autonomic )

Question 3

Glial cell types in CNS

Answer 3

1. Microglia : immune system
2. Astrocytes: nutrients
3. Oligodendrocytes: Myelin
4. Ependymal : lines brain ventricles

Question 4

Glial cell types PNS

Answer 4

1. Schwann cells: structural support and myelin

2. Satellite cells: nutrients

Question 5

Position of ions at rest

Answer 5

Sodium (+) and Chloride (-) outside and Potassium (+) inside

Question 6

How many ions does the Na/K pump move?

Answer 6

It pumps 3Na out and 2K in, using ATP hydrolysis

Question 7

Post ganglionic Neurotransmitters for symp. and parasymp.

Answer 7

Simpathetic : Norepinephrine onto adrenergic receptor

Parasympathetic: Acetylcholine onto muscarinic cholinergic receptor