Ch.11 Vocab

Question 1

Aorta

Answer 1

Largest artery in the body

Question 2

Apex of the heart

Answer 2

Lower tip of the heart

Question 3

Arteriole

Answer 3

A small artery

Question 4

Artery

Answer 4

The largest type of blood vessel; carries blood away from the heart to all parts of the body

Question 5

Atrioventricular Bundle (bundle of His)

Answer 5

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

Question 6

Atrioventricular node (AV node)

Answer 6

Specialized tissue in the wall between atria; electrical impulses pass from pacemaker through AV node and bundle of his towards ventricles

Question 7

Atrium (plural: Atria)

Answer 7

One of two chambers of the heart

Question 8

Capillary

Answer 8

The smallest blood vessel

Question 9

Carbon dioxide (CO2)

Answer 9

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

Question 10

Coronary arteries

Answer 10

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

Question 11

Deoxygenated Blood

Answer 11

Oxygen-poor blood

Question 12

Diastole

Answer 12

Relaxation phase of the heartbeat

Question 13

Electrocardiogram

Answer 13

Record of the electricity flowing through the heart

Question 14

Endocardium

Answer 14

Inner lining of the heart

Question 15

Endothelium

Answer 15

Innermost lining of blood vessels

Question 16

Mitral valve

Answer 16

Valve between the left atrium and left ventricle; bicuspid valve

Question 17

Murmur

Answer 17

Abnormal swishing sound caused by improper closure of heart valves

Question 18

Myocardium

Answer 18

Muscular, middle layer of the heart

Question 19

Normal sinus rhythm

Answer 19

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

Question 20

Oxygen

Answer 20

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

Question 21

Pacemaker (sinoatrial node)

Answer 21

Specialized nervous tissue in the right atrium that begins the heartbeat

Question 22

Pericardium

Answer 22

Double-layered membrane surrounding the heart

Question 23

Pulmonary artery

Answer 23

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

Question 24

Pulmonary circulation

Answer 24

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

Question 25

Pulmonary valve

Answer 25

Valve positioned between the right ventricle and the pulmonary artery

Question 26

Pulmonary vein

Answer 26

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

Question 27

Pulse

Answer 27

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

Question 28

Septum (septa)

Answer 28

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

Question 29

Sinoatrial node (SA node)

Answer 29

Pacemaker of the heart

Question 30

Sphygmomanometer

Answer 30

An instrument to measure blood pressure

Question 31

Systemic circulation

Answer 31

Flow of blood from body tissue to the heart and back

Question 32

Systole

Answer 32

The contraction phase of the heartbeat

Question 33

Tricuspid valve

Answer 33

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

Question 34

Valve

Answer 34

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

Question 35

Vein

Answer 35

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

Question 36

Vena cava (plural: venae cavae)

Answer 36

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

Question 37

Ventricle

Answer 37

One of two lower chambers of the heart

Question 38

Venule

Answer 38

A small vein