Cardio: Blood Vessels and Hemo

Question 1

What blood vessels carry blood away from the heart?

Answer 1

Arteries

Question 2

What blood vessels carry blood back to the heart?

Answer 2

Veins

Question 3

Their thin walls allow the exchange of substances between the blood and body tissue.

Answer 3

Capillaries (the smallest blood vessels)

Question 4

It is the increase in lumen diameter when smooth muscle fibers relax.

Answer 4

Vasodilation; Vasoconstriction when smooth muscles contract causing decrease in lumen diameter

Question 5

What is the most important method of capillary exchange?

Answer 5

Simple diffusion

Question 6

It is the hydrostatic pressure exerted by blood on the walls of a blood vessel.

Answer 6

Blood pressure

Question 7

It is the average blood pressure in arteries.

Answer 7

Mean Arterial Pressure (MAP)
MAP = systolic bp + 2 (diastolic bp) / 3
or
MAP = cariac output x resistance

Question 8

What do you call the various sounds heard while taking blood pressure?

Answer 8

Korotkoff sounds

Question 9

It is the largest artery in the body.

Answer 9

Aorta

Question 10

It receives unoxygenated blood from all tissues of the heart.

Answer 10

Coronary sinus