Chapter 10-Circulatory System

Question 1

Blood vessels that carry blood away from the heart

Answer 1

Arteries

Question 2

Wallis are composed of distinct layers

Answer 2

Arteries

Question 3

Autonomic nervous system

Answer 3

Regulates the diameter of arterioles by stimulating the smooth muscle with nerve impulse

Question 4

Vasoconstriction

Answer 4

Narrowing of the blood vessels, allowing less blood to go into the tissue
Example-turning white when frightened

Question 5

Vasodilation

Answer 5

Widening of the blood vessels, allowing more blood in the tissues
Example-blushing

Question 6

Atherosclerosis

Answer 6

Degeneration of blood vessels caused by plaque build up in the inner wall

Question 7

Arteriosclerosis

Answer 7

A group of disorders that cause the blood vessels to

Thicken, harden, and lose their elasticity

Question 8

Aneurysm

Answer 8

A bulge that forms in the wall of a weakened blood vessel. Usually an artery.

Question 9

Are composed of single layer

Walls

Answer 9

Capillaries

Question 10

Blood appears red

Answer 10

Oxygenated blood

Question 11

Appears purple blue as it leaves

Answer 11

Deoxygenated blood

Question 12

Blood vessels that carry blood towards the heart

Answer 12

Veins

Question 13

Prevent blood from flowing backwards

Answer 13

Valves

Question 14

Varicose veins

Answer 14

Venous blood pools in the veins, damaging the valves and veins become larger and bulge.