Vasomotor Control

Question 1

Chemoreceptors

Answer 1

Detect changes in CO2 and O2 level in the blood.

+CO2 during excersise
-O2 during excersise

Question 2

Baroreceptors

Answer 2

Detect changes in blood pressure.

+blood pressure during excersise
-blood pressure at rest

Question 3

VCC (Vasomotor Control Centre)

Answer 3

Responds to the information sent by chemo/baro receptors to either increase or decrease blood flow to the non-essential organs and working muscles.

Question 4

Non-essential organs

Answer 4

Increased sympathetic stimulation of arterioles pre-capillary sphincters to non-essential organs.

Causes vasoconstriction of arterioles and pre-capillary sphincters to non-essential organs.

Decreased blood flow to non-essential organs.

Question 5

Working muscles

Answer 5

Decreased sympathetic stimulation of arterioles and pre-capillary sphincters to working muscles.

Causes vasodilation of arterioles and pre-capillary sphincters to working muscles.

Increasing blood flow to working muscles.