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Med Term Ch 11 Cardiovascular System > Ch.11 Vocab > Flashcards

Ch.11 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

A small artery

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4
Q

Artery

A

The 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 atria; electrical impulses pass from pacemaker through AV node and bundle of his towards ventricles

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7
Q

Atrium (plural: Atria)

A

One of two chambers of the heart

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8
Q

Capillary

A

The smallest blood vessel

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9
Q

Carbon dioxide (CO2)

A

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

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10
Q

Coronary arteries

A

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

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11
Q

Deoxygenated Blood

A

Oxygen-poor blood

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12
Q

Diastole

A

Relaxation phase of the heartbeat

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13
Q

Electrocardiogram

A

Record of the electricity flowing through the heart

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14
Q

Endocardium

A

Inner lining of the heart

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15
Q

Endothelium

A

Innermost lining of blood vessels

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16
Q

Mitral valve

A

Valve between the left atrium and left ventricle; bicuspid valve

17
Q

Murmur

A

Abnormal swishing sound caused by improper closure of heart valves

18
Q

Myocardium

A

Muscular, middle layer of the heart

19
Q

Normal sinus rhythm

A

Heart rhythm originating in sinoatrial node with resting rate of 60-100 beats/minute

20
Q

Oxygen

A

Gas carried by the blood from the lungs to the heart to be pumped via arteries to all body cells

21
Q

Pacemaker (sinoatrial node)

A

Specialized nervous tissue in the right atrium that begins the heartbeat

22
Q

Pericardium

A

Double-layered membrane surrounding the heart

23
Q

Pulmonary artery

A

Artery carrying oxygen-poor blood from the heart to the lungs

24
Q

Pulmonary circulation

A

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

25
Q

Pulmonary valve

A

Valve positioned between the right ventricle and the pulmonary artery

26
Q

Pulmonary vein

A

Carries oxygenated blood from the lungs to the left atrium of the heart

27
Q

Pulse

A

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

28
Q

Septum (septa)

A

A partition or wall dividing a cavity, such as that between the right and left atria and right and left ventricles

29
Q

Sinoatrial node (SA node)

A

Pacemaker of the heart

30
Q

Sphygmomanometer

A

An instrument to measure blood pressure

31
Q

Systemic circulation

A

Flow of blood from body tissue to the heart and back

32
Q

Systole

A

The contraction phase of the heartbeat

33
Q

Tricuspid valve

A

Located between the right atrium and right ventricle; has three leaflets or cusps

34
Q

Valve

A

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

35
Q

Vein

A

A thin-walled vessel that carries blood from body tissues and lungs back to the heart; contains valves to prevent the back-flow of blood

36
Q

Vena cava (plural: venae cavae)

A

The largest vein in the body; superior and inferior venae cavae return blood to the right atrium of the heart

37
Q

Ventricle

A

One of two lower chambers of the heart

38
Q

Venule

A

A small vein

Med Term Ch 11 Cardiovascular System (5 decks)

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