Exercise 30

Question 1

the heart is enclosed in a double-walled sac called the

Answer 1

pericardium

Question 2

the left ventricle discharges blood into the —, form which all systemic arteries of the body diverge to supply the body tissue

Answer 2

aorta

Question 3

the right atrioventricular valve, or —, prevents backflow into the right atrium when the right ventricle is contracting

Answer 3

tricuspid valve

Question 4

the heart serves as a double pump. the — side serves as the pulmonary circut pump, shunting carbon-dioxide-rich blood to the lung

Answer 4

right

Question 5

in the heart, the — ventricle has thicker walls and a basically circular cavity shape

Answer 5

left

Question 6

location of the heart in the thorax

Answer 6

mediastinum

Question 7

tricuspid and mitral valves

Answer 7

atrioventicular valves

Question 8

discharging chambers of the heart

Answer 8

ventricles

Question 9

visceral pericardium

Answer 9

epicardium

Question 10

recieving chambers of the heart

Answer 10

atria

Question 11

layer composed of cardiac muscle

Answer 11

myocardium

Question 12

provide nutrient blood to the heart muscle

Answer 12

coronary arteries

Question 13

lining of the heart chambers

Answer 13

endocardium

Question 14

pulmonary and aortic valves

Answer 14

semilunar valves

Question 15

drains blood into the right atrium

Answer 15

coronary sinus

Question 16

trace a drop of blood through of the heart and lungs

Answer 16

right atrium –> tricuspid valve–> right ventricle–> semilunar pulmonary valve –> pulmonary truck –> pulmonary artieries –> pulmonary capillaries –> pulmonary veins –> left atrium –> mitral/bicuspid –> left ventricle –> aortic valve –> aorta