ch 39 cardiology

Question 1

cardiovascular system includes:

Answer 1

blood vessels, arteries, arterioles, capillaries, venules, and veins. heart which pumps blood, blood which contains nutrients for cells and waste product

Question 2

function of arteries

Answer 2

carry blood from heart

Question 3

function of arterioles

Answer 3

smaller arteries that move blood to capillaries; involved with maintaining blood pressure

Question 4

function of capillaries

Answer 4

allow for exchange of oxygen, nutrients, waste products, and other substances

Question 5

function of venules

Answer 5

vessels that collect blood from capillaries and begin return journey to heart

Question 6

veins

Answer 6

collect blood from venules and return blood to heart

Question 7

chamber of heart: atria

Answer 7

upper chambers (singular: atrium)

Question 8

chamber of heart: ventricles

Answer 8

lower chambers

Question 9

the heart: Septum

Answer 9

thick muscular wall that divides heart into right and left sections

Question 10

three layers of heart wall

Answer 10

Endocardium, Myocardium, Epicardium

Question 11

function of right atrium and left atrium

Answer 11

right atrium receives blood from the body (systemic veins) and the left atrium receives blood from the lungs (pulmonary veins)

Question 12

function of ventricles

Answer 12

pump blood to the body and the lungs

Question 13

function of valves

Answer 13

allow blood to flow in one direction

Question 14

two set of valves

Answer 14

atrioventricular (AV) and semilunar (SL)

Question 15

function of atrioventricular valve

Answer 15

when closed, prevents backflow of blood into atrium

Question 16

function of semilunar valve

Answer 16

Allow blood to flow out of the heart and prevent backflow of blood into ventricles