Arteries

Question 1

Function of arteries 1

Answer 1

Delivers oxygen rich blood to every tissue and organ

Question 2

Function of arteries 2

Answer 2

Ensures proper nutrient and waste exchange

Question 3

How many layers

Answer 3

3. Tunica intima, media, and adventits

Question 4

Tunica intima

Answer 4

Innermost layers. Reduces friction

Question 5

Tunica media

Answer 5

Thickest layer. Regulates blood flow. Smooth muscles, elastic fibers

Question 6

Tunica adventitis

Answer 6

Outermost layer. Strength and support

Question 7

Tunica adventitis is composed of…

Answer 7

connective tissue. anchors the artery to surrounding structures

Question 8

Smooth muscles

Answer 8

contacts and relaxes. regulates blood flow through vasoconstriction and vasodilation

Question 9

Elastic fibers

Answer 9

stretch and recoil with each heartbeat. Assist blood propulsion

Question 10

Blood Flow

Answer 10

Pulsatile. surging with each heartbeat. Due to pumping action of the heart

Question 11

Vasoconstriction

Answer 11

Smooth muscles CONTRACT and narrows the artery. Reduces blood flow to specific areas

Question 12

Vasodilation

Answer 12

Relaxation of smooth muscle. WIDENS artery. Increases blood flow to specific areas

Question 13

Pulse

Answer 13

Result of pulsating blood flow against arterial wall with each heartbeat

Question 14

Pulse can be felt where and why?

Answer 14

On neck or wrist. Measuring pulse is indicator of heart health

Question 15

Stroke volume

Answer 15

Volume of blood pumped out of the left ventricle of heart with each beat

Question 16

Cardiac output

Answer 16

Volume of blood the heart pumps through circulatory system in a minute

Question 17

Purpose of vasoconstriction and vasodilation

Answer 17

Maintains consistent blood flow and directing blood flow

Question 18

Purpose of redirecting blood flow

Answer 18

Areas of increased activity experience vasodilation. Areas of reduced activity experience vasoconstriction