Question 1

One function of the skeleton of the heart is to assist in the conduction of an impulse from the atria to the ventricles.

Accepted Answer

A) True 
 B)False

Question 2

As the action potential enters the AV node by way of the internodal bundles, the speed of the conduction increases to stimulate ventricular contraction.

Accepted Answer

A) True 
 B)False

Question 3

Match each term related to heart circulation with its corresponding location or description.
-Blood vessel into which the left ventricle pumps blood through a semilunar valve

Accepted Answer

A) Right ventricle 
B) Right atrium 
C) Left atrium 
D) Left ventricle 
E) Right atrioventricular valve
F)Left atrioventricular valve
G)Aortic semilunar valve
H)Pulmonary semilunar valve
I)Superior vena cava
J)Aorta
K)Pulmonary vein
L)Pulmonary artery 
A) Right ventricle 
B) Right atrium 
C) Left atrium 
D) Left ventricle 
E) Right atrioventricular valve
F)Left atrioventricular valve
G)Aortic semilunar valve
H)Pulmonary semilunar valve
I)Superior vena cava
J)Aorta
K)Pulmonary vein
L)Pulmonary artery

Question 4

The structure referred to as the pacemaker of the heart is(are) the:

Accepted Answer

A) AV node. 
B) SA node. 
C) cardiac plexuses. 
D) Both A and B are correct. 
A) AV node. 
B) SA node. 
C) cardiac plexuses. 
D) Both A and B are correct.

Question 5

Match each term related to heart circulation with its corresponding location or description.
-Heart chamber that pushes blood through the right atrioventricular valve when it contracts

Accepted Answer

A) Right ventricle 
B) Right atrium 
C) Left atrium 
D) Left ventricle 
E) Right atrioventricular valve
F)Left atrioventricular valve
G)Aortic semilunar valve
H)Pulmonary semilunar valve
I)Superior vena cava
J)Aorta
K)Pulmonary vein
L)Pulmonary artery 
A) Right ventricle 
B) Right atrium 
C) Left atrium 
D) Left ventricle 
E) Right atrioventricular valve
F)Left atrioventricular valve
G)Aortic semilunar valve
H)Pulmonary semilunar valve
I)Superior vena cava
J)Aorta
K)Pulmonary vein
L)Pulmonary artery

Question 6

Which part of the QRS complex represents the repolarization of the atria?

Accepted Answer

A) Q wave 
B) R wave 
C) S wave 
D) None of the above 
A) Q wave 
B) R wave 
C) S wave 
D) None of the above

Question 7

Because the muscle tissue of the heart forms a syncytium, electrical conduction through the heart is more efficient.

Accepted Answer

A) True 
 B)False

Question 8

A cause of a heart murmur may be:

Accepted Answer

A) incomplete closing of a valve. 
B) incomplete contraction of the atria. 
C) narrowing of a valve (stenosis). 
D) both A and C. 
A) incomplete closing of a valve. 
B) incomplete contraction of the atria. 
C) narrowing of a valve (stenosis). 
D) both A and C.

Question 9

A larger than normal U wave could indicate a high level of potassium in the blood.

Accepted Answer

A) True 
 B)False

Question 10

The correct order of the layers of the heart from deep to superficial is:

Accepted Answer

A) myocardium, pericardium, and endocardium. 
B) epicardium, myocardium, and pericardium. 
C) epicardium, myocardium, and endocardium. 
D) endocardium, myocardium, and epicardium. 
A) myocardium, pericardium, and endocardium. 
B) epicardium, myocardium, and pericardium. 
C) epicardium, myocardium, and endocardium. 
D) endocardium, myocardium, and epicardium.

Question 11

The midline of the body divides the heart into equal right and left halves.

Accepted Answer

A) True 
 B)False

Question 12

Describe the passage of a normal impulse through the conduction systems of the heart.

Accepted Answer

The passage of a normal impulse through

Question 13

Trace a drop of blood from the right atrium to the aorta. List the specific chambers, valves, blood vessels, and lungs in proper sequence.

Accepted Answer

Sure! Here is the sequence of the path o

Question 14

Explain what occurs during atrial systole, isovolumetric ventricular contraction, and isovolumetric ventricular relaxation.

Accepted Answer

During atrial systole, the atria contrac

Question 15

The base of the heart is superior to the apex of the heart.

Accepted Answer

A) True 
 B)False

Question 16

The cardiac cycle is one complete heartbeat.

Accepted Answer

A) True 
 B)False

Question 17

Semilunar valves open into:

Accepted Answer

A) the aorta. 
B) the pulmonary artery. 
C) the ventricles of the heart. 
D) both A and B. 
A) the aorta. 
B) the pulmonary artery. 
C) the ventricles of the heart. 
D) both A and B.

Question 18

Martha, a 63-year-old heavyset woman, was brought to the emergency room with chest pain and severe anxiety. After running some blood work, medical personnel noted that her cardiac enzyme levels were elevated. Why would this test be useful in diagnosing Martha's condition, and what is her condition?

Accepted Answer

The elevation of cardiac enzyme levels i

Question 19

The "receiving chambers" of the heart are the atria.

Accepted Answer

A) True 
 B)False

Question 20

Because the ECG is not a direct measure of contraction, an ECG deflection could be recorded without the actual contraction of the heart muscle occurring.

Accepted Answer

A) True 
 B)False

Exam 28: Heart

One function of the skeleton of the heart is to assist in the conduction of an impulse from the atria to the ventricles.

As the action potential enters the AV node by way of the internodal bundles, the speed of the conduction increases to stimulate ventricular contraction.

Match each term related to heart circulation with its corresponding location or description. -Blood vessel into which the left ventricle pumps blood through a semilunar valve

The structure referred to as the pacemaker of the heart is(are) the:

Match each term related to heart circulation with its corresponding location or description. -Heart chamber that pushes blood through the right atrioventricular valve when it contracts

Which part of the QRS complex represents the repolarization of the atria?

Because the muscle tissue of the heart forms a syncytium, electrical conduction through the heart is more efficient.

A cause of a heart murmur may be:

A larger than normal U wave could indicate a high level of potassium in the blood.

The correct order of the layers of the heart from deep to superficial is:

The midline of the body divides the heart into equal right and left halves.

Describe the passage of a normal impulse through the conduction systems of the heart.

Trace a drop of blood from the right atrium to the aorta. List the specific chambers, valves, blood vessels, and lungs in proper sequence.

Explain what occurs during atrial systole, isovolumetric ventricular contraction, and isovolumetric ventricular relaxation.

The base of the heart is superior to the apex of the heart.

The cardiac cycle is one complete heartbeat.

Semilunar valves open into:

Martha, a 63-year-old heavyset woman, was brought to the emergency room with chest pain and severe anxiety. After running some blood work, medical personnel noted that her cardiac enzyme levels were elevated. Why would this test be useful in diagnosing Martha's condition, and what is her condition?

The "receiving chambers" of the heart are the atria.

Because the ECG is not a direct measure of contraction, an ECG deflection could be recorded without the actual contraction of the heart muscle occurring.

Organization of the Body

Homeostasis

Chemistry of Life

Biomolecules

Cell Structure

Cell Function

Cell Growth and Development

Introduction to Tissues

Tissue Types

Skin

Skeletal Tissues

Axial Skeleton

Appendicular Skeleton

Articulations

Axial Muscles

Appendicular Muscles

Muscle Contraction

Nervous System Cells

Nerve Signaling

Central Nervous System

Peripheral Nervous System

Autonomic Nervous System

General Senses

Special Senses

Endocrine Regulation

Endocrine Glands

Blood

Blood Vessels

Circulation of the Blood

Lymphatic System

Innate Immunity

Adaptive Immunity

Stress

Respiratory Tract

Ventilation

Gas Exchange Transport

Upper Digestive Tract

Lower Digestive Tract

Digestion and Absorption

Nutrition and Metabolism

Urinary System

Fluid and Electrolyte Balance

Acid-Base Balance

Male Reproductive System

Female Reproductive System

Growth, Development, and Aging

Genetics and Heredity

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