Chapter 15

Question 0

This ventricle pumps blood to the lungs

Answer 0

Right ventricle

Question 1

Arteries and veins arise from this portion of the heart

Answer 1

Base

Question 2

Scientific name for a heart attack

Answer 2

Myocardium infarction

Question 3

The P wave of the electrodiagram represents his event

Answer 3

Atrial depolarization followed by systole

Question 4

The first heart sound (lubb) is caused by closure of these valves

Answer 4

AV

Question 5

Name the parts of the pericardium

Answer 5

Fibrous

Serous

Question 6

The outermost layer of the pericardium

Answer 6

Fibrous

Question 7

The layer of the pericardium that is adjacent to the heart muscle

Answer 7

Visceral

Question 8

When the atria are in systole the ventricles are in ____

Answer 8

Diastole

Question 9

When the ventricles are in systole the AV valves are _______

Answer 9

Closed

Question 10

The main function of the heart valves

Answer 10

Prevent back flow of the blood

Question 11

The T wave of the ECG indicates this event

Answer 11

Ventricular repolorization

Question 12

Venous blood (without oxygen) from the body returns to this chamber

Answer 12

Right Atrium

Question 13

The coronary arteries take blood to this location

Answer 13

Heart muscle itself

Question 14

Hardening of the walls of arteries from smooth muscle proliferation and cholesterol deposit

Answer 14

Atherosclerosis

Question 15

Condition caused by reduced blood flow to the myocardium

Answer 15

Myocardial ischemia

Question 16

Irregular heart rhythm

Answer 16

Arrhythmia

Question 17

Opening in the septum between the atria in a fetus

Answer 17

Foramen ovale

Question 18

Narrowing of a valve opening by scar tissue

Answer 18

Stenosis

Question 19

Different areas of the heart beating independently

Answer 19

Fibrillation

Question 20

Narrowing of the coronary arteries reducing blood flow to the heart; has a number of causes and is the leading cause of death in the US

Answer 20

Coronary artery disease

Question 21

The term epicardium refers to this structure

Answer 21

Outermost layer of the heart wall

Question 22

Circulation of blood through the heart muscle is supplied by the _______ circulation

Answer 22

Coronary

Question 23

Cardiac muscle is known as ____

Answer 23

Myocardium

Question 24

Chambers with the thickest wall of the heart

Answer 24

Left ventricle

Question 25

The heartbeat originates in this mass of tissue

Answer 25

SA Node

Question 26

Structure whose job is to sequence the ventricular contractions with the atrial contractions

Answer 26

AV Node

Question 27

The electrical conducting system in the outer walls of the ventricles

Answer 27

Conduction myofibers (purkinge fibers)

Question 28

Location of the SA node of the heart

Answer 28

Right atrium

Question 29

The QRS spike represents this even

Answer 29

Ventricular contraction

Question 30

The second heart sound (dupp) is caused by this

Answer 30

SL valves closing

Question 31

Heart rate is monitored and regulated by this structure

Answer 31

Cardiovascular center of medulla

Question 32

This nerve decreases heart rate

Answer 32

Vagus (CNX)

Question 33

The heart speeds up when we stand up quickly due to receptors here that detect pressure changes

Answer 33

Carotid artery

Question 34

Explain the contractions of the chambers in the cardiac cycle

Answer 34

Atria contracts then the ventricles contract

Question 35

Coronary arteries branch off from _____

Answer 35

Aorta

Question 36

The action of ____ causes audible heart sounds

Answer 36

Valves

Question 37

What causes heart murmurs

Answer 37

Improperly closing valves

Question 38

The period of relaxation in the cardiac cycle

Answer 38

Diastole

Question 39

A heart that is stretched just before contraction will contract stronger according to this law

Answer 39

Frank-Starling

Question 40

The contraction phase of the heart

Answer 40

Systole

Question 41

The good chemicals that take cholesterol to the liver are

Answer 41

High density lipoprotein (HDL)

Question 42

What causes the semilunar valves to close

Answer 42

Pressure in the ventricles is dropping

Question 43

The volume of blood ejected from each ventricle with one contraction of the heart

Answer 43

Stroke volume (70 mL)

Question 44

The amount of blood ejected by each ventricle each minute

Answer 44

Cardiac output

Question 45

The term describing heart chamber contraction is ____

Answer 45

Systole

Question 46

Name several chemicals that would act to slow the heart rate

Answer 46

Increased level of k+ or Na+

Question 47

The term describing heart chamber relaxation is ____

Answer 47

Diastole

Question 48

Chest pain caused from ischemia

Answer 48

Angina pectoris

Question 49

Inflammation of the heart covering

Answer 49

Pericarditis