circulatory system

Question 1

Pulse

Answer 1

ventricles contracts, artery walls to bulge and spring back

Question 2

Systemic circuit

Answer 2

distribution of blood to particular body parts is adjusted by altering the diameter of arterioles

Question 3

Vasodilation

Answer 3

occurs in arterioles in the extremities

Question 4

Vasoconstriction

Answer 4

occurs in arterioles of the gut

Question 5

capillary

Answer 5

cylinder of endothelial cells, one cell thick, wrapped in basement membrane, its tiny diameter facilitate exchanges between blood and interstitial fluid

Question 6

Capillaries empty to

Answer 6

veins

Question 7

exchange of oxygen happens

Answer 7

with veins, low-resistance vessels that convey blood to the heart. Veins have a flaplike valves that help prevent backflow

Question 8

blood pressure

Answer 8

pressure exerted by blood on the walls of blood vessels