Question 1

Blood vessels enter and exit from the _____ of the heart.

Accepted Answer

A)  apex 
B)  base 
C)  auricles 
D)  trigone 
E)  inferior aspect 
A)  apex 
B)  base 
C)  auricles 
D)  trigone 
E)  inferior aspect

Question 2

-Identify structure "A" on the heart diagram.

Accepted Answer

A)  left atrium 
B)  aortic semilunar valve 
C)  bicuspid (mitral) valve 
D)  right atrium 
E)  pulmonary semilunar valve 
A)  left atrium 
B)  aortic semilunar valve 
C)  bicuspid (mitral) valve 
D)  right atrium 
E)  pulmonary semilunar valve

Question 3

The dicrotic notch in the aortic pressure curve is due to the

Accepted Answer

A)  increase in intraventricular pressure during ejection. 
B)  backflow of blood toward the ventricles. 
C)  closure of the left AV valve. 
D)  elasticity of the arterial wall. 
E)  closure of the semilunar valves. 
A)  increase in intraventricular pressure during ejection. 
B)  backflow of blood toward the ventricles. 
C)  closure of the left AV valve. 
D)  elasticity of the arterial wall. 
E)  closure of the semilunar valves.

Question 4

Use the following two choices:
-$\downarrow$ pH

Accepted Answer

A) ↑ heart rate 
B) ↓ heart rate 
A) ↑ heart rate 
B) ↓ heart rate

Question 5

Which of the following will increase the heart rate?

Accepted Answer

A)  a rise in pH 
B)  an increase in the level of carbon dioxide in the blood 
C)  an increase in the level of blood oxygen 
D)  an increase in blood pressure 
E)  a decrease in the level of carbon dioxide in the blood 
A)  a rise in pH 
B)  an increase in the level of carbon dioxide in the blood 
C)  an increase in the level of blood oxygen 
D)  an increase in blood pressure 
E)  a decrease in the level of carbon dioxide in the blood

Question 6

Stimulation of the heart via the sympathetic nerves would

Accepted Answer

A)  decrease heart rate. 
B)  decrease stroke volume. 
C)  increase the force of ventricular contraction. 
D)  increase end-systolic volume. 
E)  not affect heart rate and force of contraction. 
A)  decrease heart rate. 
B)  decrease stroke volume. 
C)  increase the force of ventricular contraction. 
D)  increase end-systolic volume. 
E)  not affect heart rate and force of contraction.

Question 7

Match the structure with the appropriate description.
-aortic semilunar valve

Accepted Answer

A) located between the right atrium and the right ventricle 
B) has only two valve flaps 
C) located at the opening to the aorta 
D) a depression in the atrial septum 
E) ridges and columns on the interior walls of ventricles 
A) located between the right atrium and the right ventricle 
B) has only two valve flaps 
C) located at the opening to the aorta 
D) a depression in the atrial septum 
E) ridges and columns on the interior walls of ventricles

Question 8

Why is body temperature sometimes reduced during heart surgery?

Accepted Answer

A)  to slow respiration 
B)  to increase heart rate 
C)  to decrease heart rate 
D)  to increase the oxygen content of blood 
A)  to slow respiration 
B)  to increase heart rate 
C)  to decrease heart rate 
D)  to increase the oxygen content of blood

Question 9

An incompetent pulmonary semilunar valve could result in less blood reaching the

Accepted Answer

A)  lungs. 
B)  heart muscle. 
C)  right ventricle. 
D)  aorta. 
E)  right atrium. 
A)  lungs. 
B)  heart muscle. 
C)  right ventricle. 
D)  aorta. 
E)  right atrium.

Question 10

When ventricular pressure exceeds atrial pressure, the

Accepted Answer

A)  ejection occurs. 
B)  atria pump blood into the ventricles. 
C)  ventricle is in diastole. 
D)  blood is pumped into the atrium. 
E)  AV valves close. 
A)  ejection occurs. 
B)  atria pump blood into the ventricles. 
C)  ventricle is in diastole. 
D)  blood is pumped into the atrium. 
E)  AV valves close.

Question 11

Which blood vessel carries blood from the left ventricle?

Accepted Answer

A)  aorta 
B)  right atrium 
C)  pulmonary trunk 
D)  pulmonary arteries 
E)  pulmonary veins 
A)  aorta 
B)  right atrium 
C)  pulmonary trunk 
D)  pulmonary arteries 
E)  pulmonary veins

Question 12

An increase in extracellular calcium generally increases

Accepted Answer

A)  the heart rate. 
B)  the force of contraction. 
C)  autonomic stimulation of the heart. 
D)  sodium channel opening. 
E)  the frequency of the action potentials. 
A)  the heart rate. 
B)  the force of contraction. 
C)  autonomic stimulation of the heart. 
D)  sodium channel opening. 
E)  the frequency of the action potentials.

Question 13

A spontaneously developing local potential in the SA node is called a ________ ___________.

Accepted Answer

The answer of A spontaneously developing local potential in the...

Question 14

Match the structure with the appropriate description.
-fossa ovalis

Accepted Answer

A) located between the right atrium and the right ventricle 
B) has only two valve flaps 
C) located at the opening to the aorta 
D) a depression in the atrial septum 
E) ridges and columns on the interior walls of ventricles 
A) located between the right atrium and the right ventricle 
B) has only two valve flaps 
C) located at the opening to the aorta 
D) a depression in the atrial septum 
E) ridges and columns on the interior walls of ventricles

Question 15

If cardiac muscle cells are unable to repolarize, this would cause

Accepted Answer

A)  cardiac output to increase. 
B)  no harm. These cells can spontaneously depolarize anyway. 
C)  the heart rate to decrease. It might cause cardiac arrest. 
D)  an increased demand on mitochondria to produce more ATP. 
E)  tachycardia. 
A)  cardiac output to increase. 
B)  no harm. These cells can spontaneously depolarize anyway. 
C)  the heart rate to decrease. It might cause cardiac arrest. 
D)  an increased demand on mitochondria to produce more ATP. 
E)  tachycardia.

Question 16

Which of the following heart chambers is correctly associated with the blood vessel that enters or leaves it?

Accepted Answer

A)  right atrium - pulmonary veins 
B)  left atrium - aorta 
C)  right ventricle - pulmonary trunk 
D)  left ventricle - superior vena cava and inferior vena cava 
E)  right atrium - aorta 
A)  right atrium - pulmonary veins 
B)  left atrium - aorta 
C)  right ventricle - pulmonary trunk 
D)  left ventricle - superior vena cava and inferior vena cava 
E)  right atrium - aorta

Question 17

End-diastolic volume minus end-systolic volume is equal to

Accepted Answer

A)  cardiac output. 
B)  cardiac reserve. 
C)  pulse volume. 
D)  venous return. 
E)  stroke volume. 
A)  cardiac output. 
B)  cardiac reserve. 
C)  pulse volume. 
D)  venous return. 
E)  stroke volume.

Question 18

-Identify structure "E" on the heart diagram.

Accepted Answer

A)  left atrium 
B)  aortic semilunar valve 
C)  bicuspid (mitral) valve 
D)  right atrium 
E)  pulmonary semilunar valve 
A)  left atrium 
B)  aortic semilunar valve 
C)  bicuspid (mitral) valve 
D)  right atrium 
E)  pulmonary semilunar valve

Question 19

Within normal limits, an increase in preload leads to

Accepted Answer

A)  an increase in cardiac output and force of left ventricular contraction. 
B)  a decrease in cardiac output and force of left ventricular contraction. 
C)  an increase in cardiac output and a decrease in force of left ventricular contraction. 
D)  a decrease in cardiac output and an increase in the force of left ventricular contraction. 
E)  a decrease in stroke volume and heart rate. 
A)  an increase in cardiac output and force of left ventricular contraction. 
B)  a decrease in cardiac output and force of left ventricular contraction. 
C)  an increase in cardiac output and a decrease in force of left ventricular contraction. 
D)  a decrease in cardiac output and an increase in the force of left ventricular contraction. 
E)  a decrease in stroke volume and heart rate.

Question 20

Which of the following is NOT true about the heart?

Accepted Answer

A)  The heart is about the size of a closed fist. 
B)  The heart is located in the mediastinum. 
C)  The apex of the heart is directed superiorly and to the left. 
D)  Knowing the heart's position is important for effective CPR. 
A)  The heart is about the size of a closed fist. 
B)  The heart is located in the mediastinum. 
C)  The apex of the heart is directed superiorly and to the left. 
D)  Knowing the heart's position is important for effective CPR.

Exam 20: Cardiovascular System: the Heart

Blood vessels enter and exit from the _____ of the heart.

-Identify structure "A" on the heart diagram.

The dicrotic notch in the aortic pressure curve is due to the

Use the following two choices: - ↓\downarrow↓ pH

Which of the following will increase the heart rate?

Stimulation of the heart via the sympathetic nerves would

Match the structure with the appropriate description. -aortic semilunar valve

Why is body temperature sometimes reduced during heart surgery?

An incompetent pulmonary semilunar valve could result in less blood reaching the

When ventricular pressure exceeds atrial pressure, the

Which blood vessel carries blood from the left ventricle?

An increase in extracellular calcium generally increases

A spontaneously developing local potential in the SA node is called a ________ ___________.

Match the structure with the appropriate description. -fossa ovalis

If cardiac muscle cells are unable to repolarize, this would cause

Which of the following heart chambers is correctly associated with the blood vessel that enters or leaves it?

End-diastolic volume minus end-systolic volume is equal to

-Identify structure "E" on the heart diagram.

Within normal limits, an increase in preload leads to

Which of the following is NOT true about the heart?

The Human Organism

The Chemical Basis of Life

Cell Biology

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition, Metabolism, and Temperature Regulation

Urinary System

Water, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

Use the following two choices: - $\downarrow$ pH

A spontaneously developing local potential in the SA node is called a ___.