Question 1

Which of the following receives oxygenated blood?

Accepted Answer

A) Venae cavae 
B) Pulmonary veins 
C) Right atrium 
D) Pulmonic valve 
A) Venae cavae 
B) Pulmonary veins 
C) Right atrium 
D) Pulmonic valve

Question 2

S₂ is

Accepted Answer

A) caused by the closure of the AV valves at the beginning of ventricular contraction. 
B) the second heart sound. 
C) the heart sound caused by the opening of valves. 
D) All of the above are true. 
A) caused by the closure of the AV valves at the beginning of ventricular contraction. 
B) the second heart sound. 
C) the heart sound caused by the opening of valves. 
D) All of the above are true.

Question 3

What is located at the second rib and fifth intercostal space?

Accepted Answer

A) Base and apex of the heart 
B) Semilunar valves 
C) AV valves 
D) SA node and AV nodes 
A) Base and apex of the heart 
B) Semilunar valves 
C) AV valves 
D) SA node and AV nodes

Question 4

Which is true of the semilunar valves?

Accepted Answer

A) They are both located in the left heart. 
B) They are entrance valves. 
C) They have chordae tendineae attached to their cusps. 
D) They prevent the backflow of blood from the aorta and pulmonary artery into their respective ventricles. 
A) They are both located in the left heart. 
B) They are entrance valves. 
C) They have chordae tendineae attached to their cusps. 
D) They prevent the backflow of blood from the aorta and pulmonary artery into their respective ventricles.

Question 5

What structure is not perfused as blood flows from the venae cavae to the pulmonary veins?

Accepted Answer

A) Right ventricle 
B) Left anterior descending artery 
C) Pulmonary artery 
D) Pulmonary capillaries 
A) Right ventricle 
B) Left anterior descending artery 
C) Pulmonary artery 
D) Pulmonary capillaries

Question 6

Which of the following is true of the structures of the electrical conduction system?

Accepted Answer

A) The AV valve is the pacemaker. 
B) In normal sinus rhythm,the electrical signal arises within the SA node. 
C) The His-Purkinje system spreads the electrical system from the right atrium to the left atrium. 
D) The purpose of the AV node is to increase the speed at which the cardiac impulse moves from the atria to the ventricles. 
A) The AV valve is the pacemaker. 
B) In normal sinus rhythm,the electrical signal arises within the SA node. 
C) The His-Purkinje system spreads the electrical system from the right atrium to the left atrium. 
D) The purpose of the AV node is to increase the speed at which the cardiac impulse moves from the atria to the ventricles.

Question 7

All of the following are electrical terms except

Accepted Answer

A) sarcomere. 
B) depolarization. 
C) action potential. 
D) repolarization. 
A) sarcomere. 
B) depolarization. 
C) action potential. 
D) repolarization.

Question 8

Which layer of the heart allows it to act as a pump?

Accepted Answer

A) Epicardium 
B) Myocardium 
C) Pericardium 
D) Endocardium 
A) Epicardium 
B) Myocardium 
C) Pericardium 
D) Endocardium

Question 9

What are ventricles "doing" during atrial contraction?

Accepted Answer

A) Pumping blood into the great vessels 
B) Closing their AV valves 
C) Relaxing 
D) Opening their semilunar valves 
A) Pumping blood into the great vessels 
B) Closing their AV valves 
C) Relaxing 
D) Opening their semilunar valves

Question 10

Through which of the following semilunar valves does oxygenated blood pass?

Accepted Answer

A) Mitral 
B) Bicuspid 
C) Aortic 
D) Pulmonic 
A) Mitral 
B) Bicuspid 
C) Aortic 
D) Pulmonic

Question 11

Chordae tendineae are not associated with this valve.

Accepted Answer

A) Aortic 
B) Mitral 
C) Tricuspid 
D) Bicuspid 
A) Aortic 
B) Mitral 
C) Tricuspid 
D) Bicuspid

Question 12

In normal sinus rhythm (NSR),the

Accepted Answer

A) cardiac impulse originates in the sinoatrial node. 
B) action potential originates in the AV node. 
C) AV node activates the SA node. 
D) action potential is generated by the sympathetic nerve. 
A) cardiac impulse originates in the sinoatrial node. 
B) action potential originates in the AV node. 
C) AV node activates the SA node. 
D) action potential is generated by the sympathetic nerve.

Question 13

With which of the following is "lubb-dupp" associated?

Accepted Answer

A) Myocardial contraction 
B) Ventricular depolarization 
C) Closing of heart valves 
D) Diffusion of O₂ from the lungs to the blood in the pulmonary capillaries 
A) Myocardial contraction 
B) Ventricular depolarization 
C) Closing of heart valves 
D) Diffusion of O₂ from the lungs to the blood in the pulmonary capillaries

Question 14

Why may a "racing heart" (170 bpm) cause chest pain?

Accepted Answer

A) Chemicals produced by the metabolizing cells stimulate the vagal pain receptors. 
B) A racing heart decreases diastole,the period when coronary blood flow is maximal. 
C) A racing heart decreases the time that the heart spends in systole. 
D) Excess waste produced by metabolizing myocardial cells causes microthrombi to accumulate in the coronary arteries. 
A) Chemicals produced by the metabolizing cells stimulate the vagal pain receptors. 
B) A racing heart decreases diastole,the period when coronary blood flow is maximal. 
C) A racing heart decreases the time that the heart spends in systole. 
D) Excess waste produced by metabolizing myocardial cells causes microthrombi to accumulate in the coronary arteries.

Question 15

Which of the following is not considered a "great" vessel?

Accepted Answer

A) Left anterior descending artery 
B) Aorta 
C) Venae cavae 
D) Pulmonary artery 
A) Left anterior descending artery 
B) Aorta 
C) Venae cavae 
D) Pulmonary artery

Question 16

Which of the following is a result of ventricular contraction?

Accepted Answer

A) The AV valves open. 
B) The semilunar valves close. 
C) Blood is pumped into the pulmonary artery and the aorta. 
D) Blood flows back into the atria. 
A) The AV valves open. 
B) The semilunar valves close. 
C) Blood is pumped into the pulmonary artery and the aorta. 
D) Blood flows back into the atria.

Question 17

Into what structure does blood reflux as a consequence of an incompetent aortic semilunar valve?

Accepted Answer

A) Right atrium 
B) Circumflex artery 
C) Left ventricle 
D) Pulmonary artery 
A) Right atrium 
B) Circumflex artery 
C) Left ventricle 
D) Pulmonary artery

Question 18

Which structure is not perfused by blood that flows from the pulmonary capillaries to the aorta?

Accepted Answer

A) Right atrium 
B) Aortic semilunar valve 
C) Mitral valve 
D) Pulmonary veins 
A) Right atrium 
B) Aortic semilunar valve 
C) Mitral valve 
D) Pulmonary veins

Question 19

The bicuspid and mitral valves

Accepted Answer

A) are semilunar valves. 
B) "see" only unoxygenated blood. 
C) "see" only oxygenated blood 
D) are exit valves. 
A) are semilunar valves. 
B) "see" only unoxygenated blood. 
C) "see" only oxygenated blood 
D) are exit valves.

Question 20

The intent is to measure pulmonary wedge pressure,a procedure that requires the advancement of a catheter up to the pulmonary capillaries.The catheter is inserted into the left subclavian vein.Identify the structure that the catheter does not pass through on its way to the pulmonary capillaries.

Accepted Answer

A) Right atrium 
B) Tricuspid valve 
C) Pulmonic valve 
D) Pulmonary veins 
A) Right atrium 
B) Tricuspid valve 
C) Pulmonic valve 
D) Pulmonary veins

Exam 16: Anatomy of the Heart

Which of the following receives oxygenated blood?

S₂ is

What is located at the second rib and fifth intercostal space?

Which is true of the semilunar valves?

What structure is not perfused as blood flows from the venae cavae to the pulmonary veins?

Which of the following is true of the structures of the electrical conduction system?

All of the following are electrical terms except

Which layer of the heart allows it to act as a pump?

What are ventricles "doing" during atrial contraction?

Through which of the following semilunar valves does oxygenated blood pass?

Chordae tendineae are not associated with this valve.

In normal sinus rhythm (NSR),the

With which of the following is "lubb-dupp" associated?

Why may a "racing heart" (170 bpm) cause chest pain?

Which of the following is not considered a "great" vessel?

Which of the following is a result of ventricular contraction?

Into what structure does blood reflux as a consequence of an incompetent aortic semilunar valve?

Which structure is not perfused by blood that flows from the pulmonary capillaries to the aorta?

The bicuspid and mitral valves

The intent is to measure pulmonary wedge pressure,a procedure that requires the advancement of a catheter up to the pulmonary capillaries.The catheter is inserted into the left subclavian vein.Identify the structure that the catheter does not pass through on its way to the pulmonary capillaries.

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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