Question 1

The innermost layer of the heart wall is the

Accepted Answer

A)  mediastinum. 
B)  parietal pericardium. 
C)  epicardium. 
D)  myocardium. 
E)  endocardium. 
A)  mediastinum. 
B)  parietal pericardium. 
C)  epicardium. 
D)  myocardium. 
E)  endocardium. E

Question 2

The muscle layer of the heart is the _________________________.

Accepted Answer

myocardium

Question 3

Under conditions of hypocalcemia,

Accepted Answer

A)  cardiac muscle cells become lethargic. 
B)  cardiac muscle contraction is weak. 
C)  cardiac muscles become extremely excitable. 
D)  cardiac muscle cells remain the same. 
E)  none of the above 
A)  cardiac muscle cells become lethargic. 
B)  cardiac muscle contraction is weak. 
C)  cardiac muscles become extremely excitable. 
D)  cardiac muscle cells remain the same. 
E)  none of the above B

Question 4

The left and right coronary arteries carry blood to the

Accepted Answer

A)  heart. 
B)  head. 
C)  brain. 
D)  intestines. 
E)  liver. 
A)  heart. 
B)  head. 
C)  brain. 
D)  intestines. 
E)  liver.

Question 5

The second heart sound is heard when

Accepted Answer

A)  the AV valves open. 
B)  the AV valves close. 
C)  the semilunar valves close. 
D)  the atria contract. 
E)  blood enters the aorta. 
A)  the AV valves open. 
B)  the AV valves close. 
C)  the semilunar valves close. 
D)  the atria contract. 
E)  blood enters the aorta.

Question 6

Using the figure above, identify the labeled part.
-Label R: ________

Accepted Answer

Opening of

Question 7

The great and middle cardiac veins drain blood into the

Accepted Answer

A)  superior vena cava. 
B)  inferior vena cava. 
C)  coronary sinus. 
D)  coronary sulcus. 
E)  aorta. 
A)  superior vena cava. 
B)  inferior vena cava. 
C)  coronary sinus. 
D)  coronary sulcus. 
E)  aorta.

Question 8

The QRS wave on an ECG tracing represents

Accepted Answer

A)  atrial depolarization. 
B)  atrial repolarization. 
C)  ventricular depolarization. 
D)  ventricular repolarization. 
E)  ventricular contraction. 
A)  atrial depolarization. 
B)  atrial repolarization. 
C)  ventricular depolarization. 
D)  ventricular repolarization. 
E)  ventricular contraction.

Question 9

The amount of blood in each ventricle during isovolumetric contraction is equal to the

Accepted Answer

A)  HR. 
B)  ESV. 
C)  SV. 
D)  CO. 
E)  EDV. 
A)  HR. 
B)  ESV. 
C)  SV. 
D)  CO. 
E)  EDV.

Question 10

Atherosclerosis of coronary vessels leads to _________________________.

Accepted Answer

coronary a

Question 11

The functions of the venae cavae include which of the following?

Accepted Answer

A)  returning blood to the atria 
B)  pumping blood into circulation 
C)  removing excess fluid from the heart chambers 
D)  anchoring the heart to surrounding structures 
E)  preventing expansion of the heart 
A)  returning blood to the atria 
B)  pumping blood into circulation 
C)  removing excess fluid from the heart chambers 
D)  anchoring the heart to surrounding structures 
E)  preventing expansion of the heart

Question 12

Using the figure above, identify the labeled part.
-Label Q: ________

Accepted Answer

The answer of   Using the figure above, identify...

Question 13

The amount of muscle stretch during diastole is called the _________________________.

Accepted Answer

The answer of The amount of muscle stretch during diastole...

Question 14

The cardiac skeleton of the heart functions to

Accepted Answer

A)  physically isolate the muscle fibers of the atria from those of the ventricles. 
B)  maintain the normal shape of the heart. 
C)  help distribute the forces of cardiac contraction. 
D)  A and C only 
E)  all of the above 
A)  physically isolate the muscle fibers of the atria from those of the ventricles. 
B)  maintain the normal shape of the heart. 
C)  help distribute the forces of cardiac contraction. 
D)  A and C only 
E)  all of the above

Question 15

Blood flowing from the left atrium to the left ventricle flows through the ________ valve.

Accepted Answer

A)  bicuspid 
B)  left AV 
C)  mitral 
D)  all of the above 
E)  none of the above 
A)  bicuspid 
B)  left AV 
C)  mitral 
D)  all of the above 
E)  none of the above

Question 16

Which of the following is longest in duration of time?

Accepted Answer

A)  the refractory period of cardiac muscle 
B)  the refractory period of skeletal muscle 
C)  contraction of skeletal muscle 
D)  contraction of cardiac muscle 
E)  the P wave 
A)  the refractory period of cardiac muscle 
B)  the refractory period of skeletal muscle 
C)  contraction of skeletal muscle 
D)  contraction of cardiac muscle 
E)  the P wave

Question 17

Cardiac muscle cells are called _________________________.

Accepted Answer

The answer of Cardiac muscle cells are called _________________________....

Question 18

The great vessels of the heart are located at the _________________________ of the heart.

Accepted Answer

The answer of The great vessels of the heart are...

Question 19

The semilunar valves prevent backflow into the

Accepted Answer

A)  atria. 
B)  aorta. 
C)  ventricles. 
D)  pulmonary trunk. 
E)  venae cavae. 
A)  atria. 
B)  aorta. 
C)  ventricles. 
D)  pulmonary trunk. 
E)  venae cavae.

Question 20

Using the figure above, identify the labeled part.
-Label A: ________

Accepted Answer

The answer of   Using the figure above, identify...

The innermost layer of the heart wall is the

The muscle layer of the heart is the _________________________.

Under conditions of hypocalcemia,

The left and right coronary arteries carry blood to the

The second heart sound is heard when

Using the figure above, identify the labeled part. -Label R: ________

The great and middle cardiac veins drain blood into the

The QRS wave on an ECG tracing represents

The amount of blood in each ventricle during isovolumetric contraction is equal to the

Atherosclerosis of coronary vessels leads to _________________________.

The functions of the venae cavae include which of the following?

Using the figure above, identify the labeled part. -Label Q: ________

The amount of muscle stretch during diastole is called the _________________________.

The cardiac skeleton of the heart functions to

Blood flowing from the left atrium to the left ventricle flows through the ________ valve.

Which of the following is longest in duration of time?

Cardiac muscle cells are called _________________________.

The great vessels of the heart are located at the _________________________ of the heart.

The semilunar valves prevent backflow into the

Using the figure above, identify the labeled part. -Label A: ________

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: Blood Vessels and Circulation

The Lymphoid System and Immunity

The Respiratory System

The Digestive System

Nutrition and Metabolism

The Urinary System

The Reproductive System

Development and Inheritance

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Exam 12: The Cardiovascular System: the Heart

The innermost layer of the heart wall is the

The muscle layer of the heart is the _________________________.

Under conditions of hypocalcemia,

The left and right coronary arteries carry blood to the

The second heart sound is heard when

Using the figure above, identify the labeled part. -Label R: ________

The great and middle cardiac veins drain blood into the

The QRS wave on an ECG tracing represents

The amount of blood in each ventricle during isovolumetric contraction is equal to the

Atherosclerosis of coronary vessels leads to _________________________.

The functions of the venae cavae include which of the following?

Using the figure above, identify the labeled part. -Label Q: ________

The amount of muscle stretch during diastole is called the _________________________.

The cardiac skeleton of the heart functions to

Blood flowing from the left atrium to the left ventricle flows through the ________ valve.

Which of the following is longest in duration of time?

Cardiac muscle cells are called _________________________.

The great vessels of the heart are located at the _________________________ of the heart.

The semilunar valves prevent backflow into the

Using the figure above, identify the labeled part. -Label A: ________

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

Cell Structure and Function

The Tissue Level of Organization

The Integumentary System

The Skeletal System

The Muscular System

The Nervous System

The General and Special Senses

The Endocrine System

The Cardiovascular System: Blood

The Cardiovascular System: Blood Vessels and Circulation

The Lymphoid System and Immunity

The Respiratory System

The Digestive System

Nutrition and Metabolism

The Urinary System

The Reproductive System

Development and Inheritance

Filters