anatomy ch 13

Question 1

two upper heart chambers is called

Answer 1

atria( receiving chambers)

Question 2

Two lower chambers called

Answer 2

ventricles (discharging

chambers)

Question 3

Endocardium

Answer 3

smooth lining of heart chambers

Question 4

inflammation of endocardium called

Answer 4

endocarditis

Question 5

Pericardium

Answer 5

A two-layered fibrous sac with a lubricated space between

the two layers

Question 6

Inner layer of pericardium called

Answer 6

visceral pericardium or epicardium

Question 7

outer layer of pericardium called

Answer 7

parietal pericardium

Question 8

Contraction of the heart is called

Answer 8

systole

Question 9

Relaxation is called

Answer 9

diastole

Question 10

heart valves consist of

Answer 10

atrioventricular (AV) and two semilunar

(SL) valves

Question 11

Left AV—bicuspid (mitral)

Answer 11

At opening of the left atrium

into the ventricle

Question 12

Right AV—tricuspid

Answer 12

At opening of the right atrium into

the ventricle

Question 13

Pulmonary SL

Answer 13

At beginning of the pulmonary artery

Question 14

Aortic SL

Answer 14

At beginning of the aorta

Question 15

Two distinct heart sounds in every heartbeat

or cycle

Answer 15

lub dup

Question 16

Sinoatrial (SA) node, the pacemaker

Answer 16

Located in the wall of the right

atrium near the opening of the superior vena cava

Question 17

Atrioventricular (AV) node:

Answer 17

Located in the right atrium along the

lower part of the interatrial septum

Question 18

AV bundle (bundle of His)

Answer 18

Located in the septum of the ventricle

Question 19

Purkinje fibers:

Answer 19

Located in the walls of the ventricles

Question 20

Arteries

Answer 20

Carry blood away from the heart and toward

capillaries

Question 21

Veins

Answer 21

Carry blood toward the heart and away from

capillaries

Question 22

Capillaries

Answer 22

Carry blood from the arterioles to the venules

Question 23

outer layer of blood vessels

Answer 23

Tunica externa

Question 24

middle layer of blood vessels

Answer 24

tunica media which is smooth muscle

Question 25

inner layer of blood vessels

Answer 25

tunia intima which is Single layer of squamous epithelial cells that lines the
inner surface of the entire cardiovascular system

Question 26

Capillaries

Answer 26

Serve as exchange vessels for nutrients, wastes, and

fluids

Question 27

veins

Answer 27

Collect blood for return to the heart; low pressure

vessels

Question 28

pulse

Answer 28

Alternate expansion and recoil of the blood vessel

wall