Question 1

Which cavity first receives unoxygenated blood from the vena cava?

Accepted Answer

A) Right ventricle 
B) Left atrium 
C) Left ventricle 
D) Right atrium 
A) Right ventricle 
B) Left atrium 
C) Left ventricle 
D) Right atrium D

Question 2

Which group is incorrect?

Accepted Answer

A) Semilunar valves: pulmonic,aortic 
B) Structures that carry oxygenated blood: pulmonary veins,left ventricle,aorta 
C) Layers of the heart: epicardium,myocardium,endocardium 
D) Abnormal heart rates: tachycardia,bradycardia,normal sinus rhythm 
A) Semilunar valves: pulmonic,aortic 
B) Structures that carry oxygenated blood: pulmonary veins,left ventricle,aorta 
C) Layers of the heart: epicardium,myocardium,endocardium 
D) Abnormal heart rates: tachycardia,bradycardia,normal sinus rhythm D

Question 3

The epicardium is a layer of the

Accepted Answer

A) myocardium. 
B) diaphragm. 
C) pericardium. 
D) endocardium. 
A) myocardium. 
B) diaphragm. 
C) pericardium. 
D) endocardium. C

Question 4

Which structure is not perfused by the blood that is pumped from the right ventricle to the left ventricle?

Accepted Answer

A) Mitral valve 
B) Pulmonary artery 
C) Pulmonary veins 
D) Aorta 
A) Mitral valve 
B) Pulmonary artery 
C) Pulmonary veins 
D) Aorta

Question 5

The purpose of the right heart is to pump blood

Accepted Answer

A) to the systemic circulation. 
B) into the aorta. 
C) to the left anterior descending and circumflex arteries. 
D) to the lungs for oxygenation. 
A) to the systemic circulation. 
B) into the aorta. 
C) to the left anterior descending and circumflex arteries. 
D) to the lungs for oxygenation.

Question 6

Which of the following is an electrical event?

Accepted Answer

A) "Lubb-dupp" 
B) Actin and myosin interaction 
C) Murmur 
D) Depolarization 
A) "Lubb-dupp" 
B) Actin and myosin interaction 
C) Murmur 
D) Depolarization

Question 7

Stenosis of which valve causes right ventricular hypertrophy?

Accepted Answer

A) Mitral 
B) Tricuspid 
C) Right semilunar 
D) Left semilunar 
A) Mitral 
B) Tricuspid 
C) Right semilunar 
D) Left semilunar

Question 8

Which of the following is true of the myocardium?

Accepted Answer

A) Is nourished by the coronary arteries 
B) Contracts in response to electrical signals 
C) Is thicker in the left ventricle than in the right ventricle 
D) All of the above 
A) Is nourished by the coronary arteries 
B) Contracts in response to electrical signals 
C) Is thicker in the left ventricle than in the right ventricle 
D) All of the above

Question 9

Which of the following is least related to the mitral valve?

Accepted Answer

A) Left heart 
B) Bicuspid 
C) Semilunar 
D) Chordae tendineae 
A) Left heart 
B) Bicuspid 
C) Semilunar 
D) Chordae tendineae

Question 10

What is the cause of ventricular hypertrophy?

Accepted Answer

A) The heart muscle is not receiving sufficient oxygen. 
B) The ventricle is working too hard. 
C) The person has an infection. 
D) There is excess fluid accumulating in the pericardial space. 
A) The heart muscle is not receiving sufficient oxygen. 
B) The ventricle is working too hard. 
C) The person has an infection. 
D) There is excess fluid accumulating in the pericardial space.

Question 11

Which of the following is least true of the aortic valve?

Accepted Answer

A) It is also called the left semilunar valve. 
B) It "sees" oxygenated blood. 
C) Blood flows from the ventricle through this valve into the pulmonary artery. 
D) An incompetent aortic valve allows blood to leak from the aorta back into the left ventricle. 
A) It is also called the left semilunar valve. 
B) It "sees" oxygenated blood. 
C) Blood flows from the ventricle through this valve into the pulmonary artery. 
D) An incompetent aortic valve allows blood to leak from the aorta back into the left ventricle.

Question 12

Which of the following is least descriptive of the myocardium?

Accepted Answer

A) Supplied with blood by the coronary arteries 
B) Thicker in the ventricles than the atria 
C) Thicker in the left ventricle than the right ventricle 
D) Thicker in the left atrium than the right ventricle 
A) Supplied with blood by the coronary arteries 
B) Thicker in the ventricles than the atria 
C) Thicker in the left ventricle than the right ventricle 
D) Thicker in the left atrium than the right ventricle

Question 13

The pacemaker of the heart is located in the upper wall of the

Accepted Answer

A) right atrium. 
B) right ventricle. 
C) left atrium. 
D) left ventricle. 
A) right atrium. 
B) right ventricle. 
C) left atrium. 
D) left ventricle.

Question 14

Which of the following is a correct valvular position when the atria are contracting?

Accepted Answer

A) The tricuspid valve is closed. 
B) The pulmonic valve is open. 
C) Both semilunar valves are open. 
D) Both AV valves are open. 
A) The tricuspid valve is closed. 
B) The pulmonic valve is open. 
C) Both semilunar valves are open. 
D) Both AV valves are open.

Question 15

What is the significance of elevated plasma levels of AST,CPK,and LDH?

Accepted Answer

A) Myocardial damage as in myocardial infarction 
B) A normal myocardial response to exercise 
C) An increase in coronary blood flow 
D) Early-onset exertional angina 
A) Myocardial damage as in myocardial infarction 
B) A normal myocardial response to exercise 
C) An increase in coronary blood flow 
D) Early-onset exertional angina

Question 16

The mitral and the bicuspid valves

Accepted Answer

A) are semilunar valves. 
B) are both located on the right side of the heart. 
C) "see" only unoxygenated blood. 
D) are the same valves. 
A) are semilunar valves. 
B) are both located on the right side of the heart. 
C) "see" only unoxygenated blood. 
D) are the same valves.

Question 17

Which of the following is true regarding cardiac blood flow?

Accepted Answer

A) In the normal heart,coronary blood flow increases with exercise. 
B) In a diseased heart coronary blood flow may be maximal at rest. 
C) In a diseased heart exertion may cause ischemia and angina. 
D) All of the above are true. 
A) In the normal heart,coronary blood flow increases with exercise. 
B) In a diseased heart coronary blood flow may be maximal at rest. 
C) In a diseased heart exertion may cause ischemia and angina. 
D) All of the above are true.

Question 18

The atrioventricular node (AV node)

Accepted Answer

A) is the pacemaker of the heart. 
B) is located in the upper part of the right atrium. 
C) has a rate that is normally faster than the SA node. 
D) delays the electrical signal coming from the atria into the ventricles. 
A) is the pacemaker of the heart. 
B) is located in the upper part of the right atrium. 
C) has a rate that is normally faster than the SA node. 
D) delays the electrical signal coming from the atria into the ventricles.

Question 19

Which of the following best describes the function of the pulmonary artery?

Accepted Answer

A) It carries unoxygenated blood to the right atrium. 
B) It supplies lung tissue with oxygenated blood. 
C) It carries oxygenated blood from the lungs to the left atrium. 
D) It carries unoxygenated blood to the pulmonary capillaries,where gas exchange occurs. 
A) It carries unoxygenated blood to the right atrium. 
B) It supplies lung tissue with oxygenated blood. 
C) It carries oxygenated blood from the lungs to the left atrium. 
D) It carries unoxygenated blood to the pulmonary capillaries,where gas exchange occurs.

Question 20

Which of the following must precede ventricular contraction?

Accepted Answer

A) Ventricular systole 
B) "Lubb-dupp" 
C) Ventricular depolarization 
D) Closing of the AV valves 
A) Ventricular systole 
B) "Lubb-dupp" 
C) Ventricular depolarization 
D) Closing of the AV valves

Exam 16: Anatomy of the Heart

Which cavity first receives unoxygenated blood from the vena cava?

Which group is incorrect?

The epicardium is a layer of the

Which structure is not perfused by the blood that is pumped from the right ventricle to the left ventricle?

The purpose of the right heart is to pump blood

Which of the following is an electrical event?

Stenosis of which valve causes right ventricular hypertrophy?

Which of the following is true of the myocardium?

Which of the following is least related to the mitral valve?

What is the cause of ventricular hypertrophy?

Which of the following is least true of the aortic valve?

Which of the following is least descriptive of the myocardium?

The pacemaker of the heart is located in the upper wall of the

Which of the following is a correct valvular position when the atria are contracting?

What is the significance of elevated plasma levels of AST,CPK,and LDH?

The mitral and the bicuspid valves

Which of the following is true regarding cardiac blood flow?

The atrioventricular node (AV node)

Which of the following best describes the function of the pulmonary artery?

Which of the following must precede ventricular contraction?

Introduction to the Human Body

Basic Chemistry

Cells

Cell Metabolism

Microbiology Basics

Tissues and Membranes

Integumentary System and Body Temperature

Skeletal System

Muscular System

Nervous System: Nervous Tissue and Brain

Nervous System: Spinal Cord and Peripheral Nerves

Autonomic Nervous System

Sensory System

Endocrine System

Blood

Function of the Heart

Anatomy of the Blood Vessels and Special Circulations

Functions of the Blood Vessels

Lymphatic System

Immune System

Respiratory System

Digestive System

Urinary System

Water, Electrolyte, and Acidbase Balance

Reproductive Systems

Human Development and Heredity

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