CPR Autonomics

Question 1

What is the equation for BP?

Answer 1

BP = HR x SV x TPR

Question 2

What is a varicosity?

Answer 2

Synapse between postganglionic fiber and target tissue

Question 3

What NTs are released at varicosities?

Answer 3

NE or ACh

Question 4

What parasympathetic receptor type is found on the SA node of the heart? Sympathetic?

Answer 4

Muscarinic cholinergic receptors (parasympathetic)

Beta 1 adrenergic receptors (sympathetic)

Question 5

Which cranial nerves are parasympathetic?

Answer 5

IIi (oculomotor), VII (facial), IX (glossopharyngeal), X (vagus)

Question 6

What part of the brain is strongly involved in coordinating the autonomic responses?

Answer 6

Hypothalamus

Question 7

What is SV?

Answer 7

Stroke volume - amount of blood ejected from the heart with each beat

Question 8

What is TPR?

Answer 8

Total peripheral resistance - resistance of peripheral vessels

Question 9

How does sympathetic nervous system increase BP?

Answer 9

BP = HR x SV x TPR
HR: B1 NE receptors increase speed of contraction
SV: B1 NE receptors increase Ca2+ influx for strength of contraction
TPR: a1 NE receptors to constrict vessels and increase resistance