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HTH200 > M3B Cardiovascular Vocab > Flashcards

M3B Cardiovascular Vocab Flashcards

1
Q

aorta

A

largest artery in the body

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2
Q

apex of the heart

A

lower tip of the heart

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3
Q

arteriole

A

small artery

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4
Q

artery

A

largest type of blood vessel

carries blood away from the heart to all parts of the body

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5
Q

atrioventricular bundle (bundle of His)

A

specialized muscle fibers connecting the atria with the ventricles and transmitting electrical impulses between them

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6
Q

atrioventricular node (AV node)

A

specialized tissue in the wall between the atria

electrical impulses pass from the pacemaker (SA node) through the AV node and the bundle of His toward the ventricles

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7
Q

atrium (pl: atria)

A

one of the two upper chambers of the heart

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8
Q

capillary

A

smallest type of blood vessel

materials pass to and from the bloodstream through the thin capillary walls

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9
Q

carbon dioxide

A

gas (waste) released by body cells, transported via veins to the heart, and then to the lungs for exhalation

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10
Q

carotid arteries

A

two common carotid arteries located on each side of the neck branch from the aorta and provide blood to the head, neck, and brain

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11
Q

coronary arteries

A

blood vessels that branch from the aorta and carry oxygen rich blood to the heart muscle

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12
Q

deoxygenated blood

A

blood that is oxygen poor

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13
Q

diastole

A

relaxation phase of the heartbeat

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14
Q

electrocardiogram

A

record of the electrical activity of the heart

the electricity is represented by waves or deflections called P, QRS, or T

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15
Q

endocardium

A

inner lining of the heart

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16
Q

endothelium

A

innermost lining of blood vessels

17
Q

mitral valve

A

valve between the left atrium and the left ventricle; bicuspid valve

18
Q

murmur

A

abnormal swishing sound caused by improper closure of the heart valves

19
Q

myocardium

A

muscular middle layer of the heart

20
Q

normal sinus rhythm

A

heart rhythm originating in the sinoatrial node with a rate in patients at rest of 60 to 100 beats per minute

21
Q

oxygen

A

gas that enters the blood through the lungs and travels to the heart to be pumped via arteries to all body cells

22
Q

pacemaker (sinoatrial node)

A

specialized nervous tissue in the right atrium that begins the heartbeat

an artificial cardiac pacemaker is an electronic apparatus implanted in the chest to simulate heart muscle that is weak and not functioning

23
Q

pericardium

A

double layered membrane surrounding the heart

24
Q

pulmonary artery

A

artery carrying oxygen poor blood from the heart to the lungs

25
Q

pulmonary circulation

A

flow of blood from the heart to the lungs and back to the heart

26
Q

pulmonary valve

A

valve positioned between the right ventricle and the pulmonary artery

27
Q

pulmonary vein

A

one of two pairs of vessels carrying oxygenated blood from the lungs to the left atrium of the heart

28
Q

pulse

A

beat of the heart as felt through the walls of the arteries

29
Q

septum (pl: septa)

A

partition or wall dividing a cavity; such as between the atria (interatrial septum) and right and left ventricles (interventricular septum)

30
Q

sinoatrial node (SA node)

A

pacemaker of the heart

31
Q

sphygmomanometer

A

instrument to measure blood pressure

32
Q

systemic circulation

A

flow of blood from body tissue to the heart and then from the heart back to body tissues

33
Q

systole

A

contraction phase of the heartbeat

34
Q

tricuspid valve

A

located between the right atrium and the right ventricle

it has three leaflets, or cusps

35
Q

valve

A

structure in veins or in the heart that temporarily closes an opening so that blood flows in only one direction

36
Q

vein

A

thin-walled vessel that carries blood from body tissues and lungs back to the heart

veins contain valves to prevent backflow of blood

37
Q

vena cava (pl: venae cavae)

A

largest vein in the body

the superior and inferior venae cavae return blood to the right atrium of the heart

38
Q

ventricle

A

one of two lower chambers of the heart

39
Q

venule

A

small vein

HTH200 (39 decks)

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