Question 1

The SA node resides primarily in the right atrial wall.

Accepted Answer

A) True 
 B)False

Question 2

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 3

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 4

Angina pectoris and myocardial infarction are synonymous terms.

Accepted Answer

A) True 
 B)False

Question 5

The AV node of the heart is known as the pacemaker.

Accepted Answer

A) True 
 B)False

Question 6

Which of the following is true of the conduction system of the heart?

Accepted Answer

A)  It is made of cardiac muscle. 
B)  It is made of nervous tissue. 
C)  It continues its contractile roll even while conducting an impulse. 
D)  Both A and C are true of the conduction system of the heart. 
A)  It is made of cardiac muscle. 
B)  It is made of nervous tissue. 
C)  It continues its contractile roll even while conducting an impulse. 
D)  Both A and C are true of the conduction system of the heart.

Question 7

Congestive heart failure causes fluid to accumulate in the lung due to the inability of the right side of the heart to generate a forceful contraction.

Accepted Answer

A) True 
 B)False

Question 8

The structural components of the circulatory system include the:

Accepted Answer

A)  heart and lungs. 
B)  heart and lymph nodes. 
C)  heart and blood vessels. 
D)  heart, vessels, and lymph nodes. 
A)  heart and lungs. 
B)  heart and lymph nodes. 
C)  heart and blood vessels. 
D)  heart, vessels, and lymph nodes.

Question 9

The repolarization of the atrium cannot be seen on the ECG because the size of the QRS complex blocks it out.

Accepted Answer

A) True 
 B)False

Question 10

What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium?

Accepted Answer

A)  Because they form a syncytium, cardiac muscles can contract on their own. 
B)  Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium. 
C)  Because they form a syncytium, muscle cells cannot summate contraction to produce tetanus, and thus do not fatigue. 
D)  Because they form a syncytium, cardiac muscle cells can pass an action potential by way of internodal bundles contracting both atrial chambers. 
A)  Because they form a syncytium, cardiac muscles can contract on their own. 
B)  Because they form a syncytium, muscle cells can pass an action potential along a large area of the heart wall, stimulating contraction in each muscle fiber of the syncytium. 
C)  Because they form a syncytium, muscle cells cannot summate contraction to produce tetanus, and thus do not fatigue. 
D)  Because they form a syncytium, cardiac muscle cells can pass an action potential by way of internodal bundles contracting both atrial chambers.

Question 11

During atrial systole the AV valves are closed.

Accepted Answer

A) True 
 B)False

Question 12

Under resting conditions, the SA node fires at an intrinsic rhythmical rate of 80 to 85 beats per minute.

Accepted Answer

A) True 
 B)False

Question 13

Match each term related to heart circulation with its corresponding location or description.
-Blood vessel into which the right 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 14

The contraction of the heart is referred to as systole.

Accepted Answer

A) True 
 B)False

Question 15

Which of the following statements is not true about the nerve supply to the heart?

Accepted Answer

A)  The heart is autorhythmic. 
B)  The heart receives both sympathetic and parasympathetic impulses. 
C)  The vagus nerve serves as an inhibitory nerve. 
D)  All of the above are true about the nerve supply to the heart. 
A)  The heart is autorhythmic. 
B)  The heart receives both sympathetic and parasympathetic impulses. 
C)  The vagus nerve serves as an inhibitory nerve. 
D)  All of the above are true about the nerve supply to the heart.

Question 16

Blood in the left atria has just come from the lungs.

Accepted Answer

A) True 
 B)False

Question 17

During isovolumetric ventricular contraction, the semilunar valves are closed but the AV valves are open.

Accepted Answer

A) True 
 B)False

Question 18

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 19

The terms atria and auricle mean the same thing.

Accepted Answer

A) True 
 B)False

Question 20

Premature contractions, or extra systoles, often occur with lack of sleep, too much caffeine or nicotine, alcoholism, or heart damage.

Accepted Answer

A) True 
 B)False

Exam 28: Heart

The SA node resides primarily in the right atrial wall.

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

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?

Angina pectoris and myocardial infarction are synonymous terms.

The AV node of the heart is known as the pacemaker.

Which of the following is true of the conduction system of the heart?

Congestive heart failure causes fluid to accumulate in the lung due to the inability of the right side of the heart to generate a forceful contraction.

The structural components of the circulatory system include the:

The repolarization of the atrium cannot be seen on the ECG because the size of the QRS complex blocks it out.

What is the functional significance of large areas of cardiac muscle being electrically coupled to form a single functional syncytium?

During atrial systole the AV valves are closed.

Under resting conditions, the SA node fires at an intrinsic rhythmical rate of 80 to 85 beats per minute.

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

The contraction of the heart is referred to as systole.

Which of the following statements is not true about the nerve supply to the heart?

Blood in the left atria has just come from the lungs.

During isovolumetric ventricular contraction, the semilunar valves are closed but the AV valves are open.

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

The terms atria and auricle mean the same thing.

Premature contractions, or extra systoles, often occur with lack of sleep, too much caffeine or nicotine, alcoholism, or heart damage.

Organization of the Body

Homeostasis

Chemical Basis 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 and Development

Genetics and Heredity

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