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A and P 2 > ch 20 test > Flashcards

ch 20 test Flashcards

1
Q

collects blood from systemic circuit

A

right atria

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2
Q

pumps blood to pulmonary circuit

A

right ventricle

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3
Q

collects blood from pulmonary circuit

A

left atria

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4
Q

pumps blood into systemic circuit

A

left ventricle

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5
Q

visceral pericardium

A

inner layer of pericardium

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6
Q

parietal paricardium

A

outer layer that forms inner layer of paricardial sac

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7
Q

coronary sulcus

A

divides atria and ventricles

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8
Q

anterior and posterior interventricular sulcus

A

seperate left and right ventricles, contain blood vessels and cardiac muscle

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9
Q

epicardium

A

outer layer, visceral pericardium, covers the heart

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10
Q

atrioventricular valves (AV valves)

A

connect right atrium to right ventricle and left atrium to left ventricle
Blood pressure closes valve cusps during ventricular contraction
Papillary muscles tense chordae tendineae to prevent valves from swinging into atria

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11
Q

right atrium vessels

A

superior vena cave, inferior vena cava, and coronary sinus

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12
Q

superior vena cava

A

recieves blood from head, neck, upper limbs, and chest

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13
Q

inferior vena cava

A

recieves blood from trunk, viscera, and lower limbs

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14
Q

foramen ovale

A

Before birth, is an opening through interatrial septum
Connects the two atria
Seals off at birth, forming fossa ovalis

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15
Q

Pectinate muscles

A

Contain prominent muscular ridges

On anterior atrial wall and inner surfaces of right auricle

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16
Q

right AV valve

A

tricuspid valve

17
Q

Trabeculae carneae

A

Muscular ridges on internal surface of right (and left) ventricle

18
Q

Conus arteriosus

A

superior end of right ventricle) leads to pulmonary trunk

19
Q

left atrioventricular (AV) valve

A

A two-cusped bicuspid valve or mitral valve

20
Q

The Left Ventricle

A

Similar internally to right ventricle but does not have moderator band
Blood leaves left ventricle through aortic valve into ascending aorta

21
Q

Structural Differences between the Left and Right Ventricles

A

Right ventricle wall is thinner, develops less pressure than left ventricle
Right ventricle is pouch-shaped, left ventricle is round

22
Q

Semilunar valves

A

Pulmonary and aortic tricuspid valves
Prevent backflow from pulmonary trunk and aorta into ventricles
Have no muscular support
Three cusps support like tripod

23
Q

The Cardiac Skeleton

A

Four bands around heart valves and bases of pulmonary trunk and aorta
Stabilize valves
Electrically insulate ventricular cells from atrial cells

A and P 2 (14 decks)

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