Session 8: Autonomic Nervous System Flashcards Preview

Sem 1: Pharamacology and Physiology > Session 8: Autonomic Nervous System > Flashcards

Flashcards in Session 8: Autonomic Nervous System Deck (15):
1

What does the ANS control?

Involuntary functions

2

What are the two anatomically defined defined divisions of the ANS?

1. Parasympathetic
2. Sympathetic

3

How is the sympathetic nervous system described?

Fight or flight

4

How is the parasympathetic nervous system described?

Rest and digest

5

Which of the anatomical deviations of the brainstem and spinal chord are sympathetic?

T- Thoracic
L- Lumber

6

Which of the anatomical deviations of the brainstem and spinal chord are parasympathetic?

M- Medullary
S- Sacral

7

What is the name of the nerve that is particularly important in regulating the heart?

Vagus Nerve

8

Describe 3 features of parasympathetic nerves.

1. Long myelinated preganglion nerves
2. Short myelinated postganglion nerves
3. Ganglia located in innervated tissue

9

Describe 3 features of sympathetic nerves.

1. Short preganglion nerves
2. Long postganglion nerves
3. Ganglia located close to spinal chord

10

What type of receptor are nicotinic Ach receptors?

Ligand gated Ion channel

11

Name 2 specialised sympathetic post ganglion nerves that are cholinergic.

1. Sweat glands
2. Hair follicles

12

What are NANC?

Non-adrenergic, non-cholinergic transmitters

13

Give 3 examples of NANC transmitters.

1. ATP
2. NO
3. Serotonin

14

Describe the hormonal aspect of the sympathetic nervous system.

The adrenal medulla produces adrenaline.

15

How are sympathetic postganglion neurons in the adrenal gland different?

- Differentiate to form neurosecretory chromaffin cells
- do not project to target tissue
- instead these cells release adrenaline