Vocab

Question 0

Atria

Answer 0

Two upper chambers of the heart

Receiving chambers

Question 1

Apex

Answer 1

Blunt point on the bottom of the heart

Question 2

Ventricles

Answer 2

Two lower chambers of the heart

Discharging chambers

Question 3

Myocardium

Answer 3

Cardiac muscle tissue on the heart chambers

Question 4

Endocardium

Answer 4

Thin layer of very smooth tissue lining the heart chambers

Question 5

Endocarditis

Answer 5

Inflammation of the heart chamber lining

Question 6

Thrombus

Answer 6

Clot

Question 7

Pericardium

Answer 7

Lining of the heart

Question 8

Visceral pericardium

Answer 8

Inner layer of pericardium

Covers heart like apple skin

Question 9

Parietal pericardium

Answer 9

Outer layer of pericardium

-fits heart loosely to allow room for heart beating

Question 10

Systole

Answer 10

Contraction of the heart

Question 11

Diastole

Answer 11

Relaxation of the heart

Question 12

Atrioventricular (AV) valves

Answer 12

Two valves that separate the atrial chambers above the ventricles

Question 13

The left AV valve is

Answer 13

Bicuspid
Mitral
Tricuspid

Question 14

Chordae tendinae

Answer 14

Attach the AV valves to the wall of the ventricles

Question 15

Semilunar SL valves

Answer 15

Located between the two ventricular chambers

Question 16

Superior & inferior vena cava

Answer 16

Two large veins that the blood enters through in the right atrium

Question 17

Pulmonary artery

Answer 17

Artery that carries deoxygenated blood from the right ventricle to the lungs

Question 18

Pulmonary veins

Answer 18

Any vein that carries oxygenated blood from the lungs to the left atrium

Question 19

Aorta

Answer 19

Artery that gives off oxygenated blood to the body

Question 20

What happens when blood goes through the lungs

Answer 20

Oxygen is added and carbon dioxide is lost

Question 21

Coronary circulation

Answer 21

Delivery of oxygen & removal of waste in the myocardium

Question 22

Coronary arteries

Answer 22

Aortas first branches

Supplies blood to the myocardium

Question 23

Embolism

Answer 23

Blood clot that plugs up some part of the coronary artery

Question 24

Myocardial infarction

Answer 24

Death of cardiac muscle cells resulting from inadequate blood supply as in coronary thrombosis

Question 25

Agina pectoris

Answer 25

Describes chest pains that occurs when the myocardium is low on oxygen

Question 26

Coronary bypass surgery

Answer 26

Where veins are taken from other parts of the body to bypass the partial blockage

Question 27

Sinoatrial node

Answer 27

The hearts pacemaker | Where impulse normally starts

Question 28

Atrioventricular node

Answer 28

Small mass of specialized cardiac tissue

Question 29

AV bundle

Answer 29

Fibers in the heart that relay a nerve impulse from the AV node to the ventricles

Question 30

Purkinje fiber

Answer 30

Relays impulses from the AV node to the ventricles causing them to contract

Question 31

Electrocardiogram

Answer 31

Record hearts electrical activity

Question 32

Tunica externa

Answer 32

Outermost layer (arteries & veins) Made of connective tissue fibers which reinforce the wall of the vessel so that it will not burst under pressure •thinner in arteries • thicker in veins

Question 33

Tunica media

Answer 33

Middle layer •thicker in arteries to push blood out & maintain blood pressure •thinner in veins of elastic fibrous tissue

Question 34

Tunica intima

Answer 34

Inner layer | Single layer of squamous epithelial cells

Question 35

Precapillary sphincters

Answer 35

Guard the entrances to the capillaries and determine how much blood will flow into each capillary

Question 36

Arteries & arterioles

Answer 36

Distribute blood from the heart to capillaries all over body •help maintain blood pressure at normal level

Question 37

Venules & veins

Answer 37

Collect blood from capillaries and return it to the heart | •carry blood under lower pressure

Question 38

Capillaries

Answer 38

Functional exchange vessels

Question 39

Systemic circulation

Answer 39

Blood flow from the left ventricle to all parts of the body and back to the right atrium

Question 40

Pulmonary circulation

Answer 40

Venous blood flow from the right atrium to the lung and returning to the left atrium

Question 41

Hepatic portal circulation

Answer 41

The route of blood flow through the liver

Question 42

Blood pressure gradient

Answer 42

The difference between two blood pressures in the body

Question 43

Hypertension

Answer 43

Abnormally high blood pressure

Question 44

Peripheral resistance

Answer 44

Describes any force that acts against the flow of blood I'm a blood vessel

Question 45

Vasomotor mechanism

Answer 45

Factors that control changes in the diameter of arterioles by changing the tension of smooth muscle in the vessel walls

Question 46

Central venous pressure

Answer 46

Venous pressure within the right atrium that influences the pressure I'm the large peripheral veins