Lecture 12

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Question 1 of 6

What is oncotic pressure?
The pressure gradient drawing fluid into the capillaries caused by proteins in capillaries (albumin).

Question 1 of 6

Question 2 of 6

How fast does the sympathetic nervous system respond to a sudden drop in BP?
Very fast (within a heartbeat)

Question 2 of 6

Question 3 of 6

What is the primary neurotransmitter used in sympathetic neurons for vasoconstriction.
Norepinephrine

Question 3 of 6

Question 4 of 6

What happens to arterioles when norepinephriene released by sympathetic nerves is decreased?
Vasodilation, decreased heart rate, decreased contractility, CO ↓, HR ↓.

Question 4 of 6

Question 5 of 6

What happens when the sympathetic nervous system stimulates the adenal medulla?
Norepinephrine / epinephrine released.

Question 5 of 6

Question 6 of 6

What factors influence total peripheral resistance?
Tone in arterioles, blood viscosity, concentrated RBC

Question 6 of 6