Ch. 17 - Part A

Question 1

Side of heart that receives oxygen-poor blood from tissues

Answer 1

right side

Question 2

The right side pumps blood to lungs via the…

Answer 2

pulmonary circuit

Question 3

Side of heart that receives oxygenated blood from lungs

Answer 3

left side

Question 3

The left side pumps blood to body tissues via the…

Answer 3

systemic circuit

Question 4

Receiving chambers of heart

Answer 4

right and left atrium

Question 5

right atrium

Answer 5

receives blood returning from systemic circuit (deoxygenated)

Question 6

left atrium

Answer 6

receives blood returning from pulmonary circuit (oxygenated)

Question 7

pumping chambers of heart

Answer 7

right and left ventricles

Question 8

right ventricle

Answer 8

pumps blood through pulmonary circuit

Question 9

left ventricle

Answer 9

pumps blood through systemic circuit

Question 10

pericardium layers

Answer 10

fibrous and serous

Question 11

serous pericardium layers

Answer 11

parietal and visceral

Question 12

myocardium

Answer 12

circular or spiral bundles of contractile cardiac muscle cells

Question 13

epicardium

Answer 13

visceral layer of serous pericardium

Question 14

cardiac skeleton

Answer 14

crisscrossing, interlacing layers of connective tissue

Question 15

cardiac skeleton functions

Answer 15

anchors cardiac muscle fibers, supports vessels and valves, limits spread of action potentials to specific paths

Question 16

four chambers

Answer 16

two superior atria and two inferior ventricles

Question 17

separates atria

Answer 17

interatrial septum

Question 18

three veins empty into right atrium

Answer 18

superior vena cava, inferior vena cava, coronary sinus

Question 19

superior vena cava

Answer 19

returns blood from body regions above the diaphragm

Question 20

inferior vena cava

Answer 20

returns blood from body regions below the diaphragm

Question 21

coronary sinus

Answer 21

returns blood from coronary veins

Question 22

papillary muscles

Answer 22

project into ventricular cavity

Question 23

right ventricle pumps blood into..

Answer 23

pulmonary trunk

Question 24

left ventricle pumps blood into

Answer 24

aorta

Question 25

How are ventricles different from atria?

Answer 25

thicker walls, actual pumps of heart

Question 26

two major types of valves

Answer 26

atrioventricular and semilunar

Question 27

atrioventricular valves

Answer 27

prevent backflow into atria when ventricles contract

Question 28

semilunar valves

Answer 28

prevent backflow from major arteries back into ventricles

Question 29

two semilunar valves

Answer 29

pulmonary and aortic

Question 29

incompetent valve

Answer 29

blood backflows so hear repumps same blood over and over

Question 30

vavular stenosis

Answer 30

stiff flaps constrict opening, heart needs to exert for force to pump blood

Question 31

Pathway of blood through right side of heart

Answer 31

superior vena cava, inferior vena cava, coronary sinus, right atrium, triscupid valve, right ventricle, pulmonary semilumar valve, pulmonary trunk, pulmonary arteries lungs

Question 32

Pathway of blood through left side of heart

Answer 32

four pulmonary veins, left atrium, mitral valve, left ventricle, sortic semilunar valve, aorta, systemic circulation

Question 33

left coronary artery branches

Answer 33

anterior interventricular artery and circumflex artery

Question 34

right coronary artery branches

Answer 34

right marginal artery and posterior interventricular artery

Question 35

cardiac veins

Answer 35

collect blood from capillary beds

Question 36

coronary sinus

Answer 36

empties into right atrium

Question 37

angina pectoris

Answer 37

thoracic pain caused by fleeting deficiency in blood delivery to myocardium

Question 38

myocardial infarction (heart attack)

Answer 38

prolonged coronary blockage

Question 39

cardiac muscle

Answer 39

striated, short, branched, fat, interconnected

Question 40

cardiac muscle contains

Answer 40

lots of mitochondria and the rest is sarcomeres

Question 41

functional syncytium

Answer 41

a single coordinated unit

Question 42

what allows the heart to be a functional syncytium

Answer 42

desmosomes and gap junctions

Question 43

two kinds of myocites

Answer 43

contractile and pacemaker