Autonomic control of Cardiovascular System Flashcards
1
Q
What does autonomic mean?
A
- not under conscious control (involuntary)
2
Q
What is the PSNS responsible for? (3)
A
- rest/digest
- housekeeping
- energy conservation
3
Q
What is the role of the vagus nerve? (3)
A
- innervates SA region (set heart rate)
- slows heart rate w acetylcholine
- ventricle is poorly innervated
4
Q
What is the vagus nerve compared to?
A
- break in car (car moves if not pressing break)
5
Q
What is the SNS responsible for?
A
- fight or flight
6
Q
What 3 things are part of adrenergic innervation?
A
- SA and AV regions
- Compacta of ventricle
- Coronary vessels
7
Q
What do compacta do?
A
- force for Q
8
Q
What do coronary vessels do? (2)
A
- blood supply for compacta
- O2 supply for muscle (increase blood supply)
