Question 1

In an ECG pattern,the P wave is caused by

Accepted Answer

A)   repolarization of the atrial muscle fibers.
B)   repolarization of the ventricular muscle fibers.
C)   depolarization of atrial muscle fibers.
D)   depolarization of ventricular muscle fibers.
E)   none of the above.F) C) and D)
G) A) and B)

Question 2

The top of the heart is called the base,and the pointed bottom of the heart is called the apex.

Accepted Answer

A) True 
 B)False

Question 3

During ventricular contraction,what statement is true?

Accepted Answer

A)   The atrioventricular valves are open.
B)   The atrioventricular valves are closed.
C)   The aortic valve is closed.
D)   The pulmonary valve is closed.E) C) and D)
F) A) and B)

Question 4

Relaxation of the heart is called ________.

Accepted Answer

A)   systole
B)   diastoleC) A) and B)
D) undefined

Question 5

Contraction of the heart is called _________.

Accepted Answer

A)   systole
B)   diastoleC) A) and B)
D) undefined

Question 6

Venous pathways commonly connect in irregular networks and may have many unnamed tributaries.

Accepted Answer

A) True 
 B)False

Question 7

All venous blood returns to the heart through the superior or inferior vena cava.

Accepted Answer

A) True 
 B)False

Question 8

The oxygen-rich vessels that supply the heart muscle with blood are the cardiac veins.

Accepted Answer

A) True 
 B)False

Question 9

This layer of a blood vessel wall is made of connective tissue and attaches the vessel to surrounding tissues.

Accepted Answer

A)   epithelium
B)   tunica interna
C)   tunica media
D)   tunica externa
E)   smooth muscleF) A) and D)
G) A) and E)

Question 10

The parietal pericardium is the innermost layer that covers the surface of the heart.

Accepted Answer

A) True 
 B)False

Question 11

Because capillary blood pressure in the arteriolar ends of capillaries is higher than the osmotic pressure,

Accepted Answer

A)   more fluid flows into the capillaries than moves out.
B)   the lymphatic vessels push fluid into the capillaries.
C)   the pressure in the venules increases.
D)   more fluid leaves the capillaries than returns.
E)   more fluid flows into the venules.F) None of the above
G) B) and E)

Question 12

This artery has branches called the gastric,hepatic and splenic arteries.

Accepted Answer

A)   celiac
B)   inferior
C)   vena cava
D)   inferior mesenteric
E)   superior mesentericF) C) and D)
G) B) and C)

Question 13

The correct sequence of structures of the cardiac conduction system is

Accepted Answer

A)   AV node,SA node,Purkinje fibers,AV bundle.
B)   AV node,AV bundle,Purkinje fibers,SA node.
C)   SA node,Purkinje fibers,AV node,AV bundle.
D)   SA node,AV node,AV bundle,Purkinje fibers.
E)   Purkinje fibers,SA node,AV node,AV bundle.F) A) and D)
G) All of the above

Question 14

The tunica media is thickest in this type of blood vessels.

Accepted Answer

A)   arteries
B)   veins
C)   capillaries
D)   arterioles
E)   venulesF) B) and C)
G) C) and D)

Question 15

Plasma proteins in blood capillaries help to

Accepted Answer

A)   maintain the osmotic pressure of the blood.
B)   decrease the osmotic pressure of the blood.
C)   maintain the hydrostatic pressure of the blood.
D)   decrease the hydrostatic pressure of the blood.
E)   decrease the barometric pressure of the blood.F) B) and C)
G) A) and E)

Question 16

The Frank-Starling law of the heart holds that the

Accepted Answer

A)   greater the length of myocardial fibers,the greater the force with which they contract.
B)   lesser the length of myocardial fibers,the greater the force with which they contract.
C)   lesser the blood volume,the greater the force of ventricular contraction.
D)   lesser the blood viscosity,the lesser the force of ventricular contraction.
E)   greater the peripheral resistance,the lesser the ventricular contraction.F) All of the above
G) A) and E)

Question 17

A mass of interconnected cardiac muscle cells that act as a group constitutes a(an)________.

Accepted Answer

functional...

Question 18

This layer of the heart wall is mostly cardiac muscle tissue.

Accepted Answer

A)   epicardium
B)   myocardium
C)   endocardium
D)   pericardiumE) B) and C)
F) A) and C)

Exam 13: Cardiovascular System

In an ECG pattern,the P wave is caused by

Correct Answer
verified

All venous blood returns to the heart through the superior or inferior vena cava.

Correct Answer
verified

The parietal pericardium is the innermost layer that covers the surface of the heart.

Correct Answer
verified

This artery has branches called the gastric,hepatic and splenic arteries.

Correct Answer
verified

This layer of a blood vessel wall is made of connective tissue and attaches the vessel to surrounding tissues.

Correct Answer
verified

The oxygen-rich vessels that supply the heart muscle with blood are the cardiac veins.

Correct Answer
verified

During ventricular contraction,what statement is true?

Correct Answer
verified

Because capillary blood pressure in the arteriolar ends of capillaries is higher than the osmotic pressure,

Correct Answer
verified

This layer of the heart wall is mostly cardiac muscle tissue.

Correct Answer
verified

Relaxation of the heart is called ________.

Correct Answer
verified

A mass of interconnected cardiac muscle cells that act as a group constitutes a(an)________.

Correct Answer
verified
functional...
View Answer

Contraction of the heart is called _________.

Correct Answer
verified

The Frank-Starling law of the heart holds that the

Correct Answer
verified

Plasma proteins in blood capillaries help to

Correct Answer
verified

The top of the heart is called the base,and the pointed bottom of the heart is called the apex.

Correct Answer
verified

The correct sequence of structures of the cardiac conduction system is

Correct Answer
verified

Venous pathways commonly connect in irregular networks and may have many unnamed tributaries.

Correct Answer
verified

The tunica media is thickest in this type of blood vessels.

Correct Answer
verified

Exam 13: Cardiovascular System

In an ECG pattern,the P wave is caused by

Correct AnswerverifiedShow Answer

All venous blood returns to the heart through the superior or inferior vena cava.

Correct AnswerverifiedShow Answer

The parietal pericardium is the innermost layer that covers the surface of the heart.

Correct AnswerverifiedShow Answer

This artery has branches called the gastric,hepatic and splenic arteries.

Correct AnswerverifiedShow Answer

This layer of a blood vessel wall is made of connective tissue and attaches the vessel to surrounding tissues.

Correct AnswerverifiedShow Answer

The oxygen-rich vessels that supply the heart muscle with blood are the cardiac veins.

Correct AnswerverifiedShow Answer

During ventricular contraction,what statement is true?

Correct AnswerverifiedShow Answer

Because capillary blood pressure in the arteriolar ends of capillaries is higher than the osmotic pressure,

Correct AnswerverifiedShow Answer

This layer of the heart wall is mostly cardiac muscle tissue.

Correct AnswerverifiedShow Answer

Relaxation of the heart is called ________.

Correct AnswerverifiedShow Answer

A mass of interconnected cardiac muscle cells that act as a group constitutes a(an)________.

Correct Answerverifiedfunctional...View AnswerShow Answer

Contraction of the heart is called _________.

Correct AnswerverifiedShow Answer

The Frank-Starling law of the heart holds that the

Correct AnswerverifiedShow Answer

Plasma proteins in blood capillaries help to

Correct AnswerverifiedShow Answer

The top of the heart is called the base,and the pointed bottom of the heart is called the apex.

Correct AnswerverifiedShow Answer

The correct sequence of structures of the cardiac conduction system is

Correct AnswerverifiedShow Answer

Venous pathways commonly connect in irregular networks and may have many unnamed tributaries.

Correct AnswerverifiedShow Answer

The tunica media is thickest in this type of blood vessels.

Correct AnswerverifiedShow Answer

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functional...
View Answer

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