Cardiovascular Veins

Question 1

Veins are important because they act as
A. volume reservoirs
B. Pressure reservoirs
C. sites of substance exchange
D. sites of variable resistance
E. vessels to deliver oxygenated blood to tissues

Answer 1

A

Question 2

What acts as a pressure reservoir?

Answer 2

Arteries

Question 3

What are vessels that deliver oxygenated blood to tissues

Answer 3

Capillaries

Question 4

What happens inactive hyperemia?
A. Increased metabolism releases paracrine vasoconstrictors
B. The sympathetic nervous system is activated
C. Increased oxygen levels cause blood vessels to relax
D. Histamine is released from mast cells to cause vasodilation
E. Increased metabolism releases paracrine vasodilators

Answer 4

E

Question 5

How does myogenic regulation respond to a decrease in local blood flow?
A. Depolarisation of vascular smooth muscle cells
B. Increased Ca2+ entry and vasoconstriction
C. decreased Ca2+ entry and reduced vascular resistance
D. Opening of stretch sensitive ion channels
E. All of the options are correct

Answer 5

C

Question 6

Which of the following will increase fluid movement out of the capillary?
A. Decreased venous pressure
B. Decreased arterial pressure
C. Increased plasma protein concentration
D. Increased permeability of capillary wall
E. Decreased permeability of capillary wall

Answer 6

D

Question 7

Which of the following structure do not contain smooth muscle
A. Arteries
B. Veins
C. Arterioles
D. Capillaries
E. All of the options do not contain smooth muscle

Answer 7

D - Due to increased gas exchange that is required