Question 1

This is used to reduce the friction between membranes of the heart.

Accepted Answer

A)  epicardium 
B)  endocardium layer 
C)  pericardium 
D)  pericardial (serous) fluid 
E)  pericardial cavity 
A)  epicardium 
B)  endocardium layer 
C)  pericardium 
D)  pericardial (serous) fluid 
E)  pericardial cavity

Question 2

The second heart sound represents which of the following events?

Accepted Answer

A)  valvular stenosis 
B)  semilunar valves opening 
C)  atrioventricular valves closing 
D)  semilunar valves closing 
E)  atrioventricular valves opening 
A)  valvular stenosis 
B)  semilunar valves opening 
C)  atrioventricular valves closing 
D)  semilunar valves closing 
E)  atrioventricular valves opening

Question 3

What is the layer that protects the heart?

Accepted Answer

A)  epicardium 
B)  pericardium 
C)  myocardial tissue 
D)  mediastinum 
E)  endocardium 
A)  epicardium 
B)  pericardium 
C)  myocardial tissue 
D)  mediastinum 
E)  endocardium

Question 4

This is comprised of a thin layer of endothelium overlying a thin layer of connective tissue.

Accepted Answer

A)  C 
B)  D 
C)  E 
D)  F 
E)  G 
A)  C 
B)  D 
C)  E 
D)  F 
E)  G

Question 5

In the diagram, where is the marginal branch?

Accepted Answer

A)  A 
B)  B 
C)  D 
D)  E 
E)  F 
A)  A 
B)  B 
C)  D 
D)  E 
E)  F

Question 6

In the diagram, these contain coronary blood vessels and a variable amount of fat.

Accepted Answer

A)  F and H 
B)  A and B 
C)  C and G 
D)  E and I 
E)  D and F 
A)  F and H 
B)  A and B 
C)  C and G 
D)  E and I 
E)  D and F

Question 7

Which of the following consists of inelastic dense irregular connective tissue?

Accepted Answer

A)  parietal layer of pericardium 
B)  serous pericardium 
C)  fibrous pericardium 
D)  epicardium 
E)  pericardial cavity 
A)  parietal layer of pericardium 
B)  serous pericardium 
C)  fibrous pericardium 
D)  epicardium 
E)  pericardial cavity

Question 8

This vessel distributes oxygenated blood to the myocardium.

Accepted Answer

A)  coronary artery 
B)  coronary vein 
C)  right ventricle 
D)  left auricle 
E)  myocardial vein 
A)  coronary artery 
B)  coronary vein 
C)  right ventricle 
D)  left auricle 
E)  myocardial vein

Question 9

In the diagram, where is an atrioventricular valve?

Accepted Answer

A)  B 
B)  D 
C)  A 
D)  B and D 
E)  B, D, and A 
A)  B 
B)  D 
C)  A 
D)  B and D 
E)  B, D, and A

Question 10

This part of the heart can initiate a contraction and can set a constant heart rate of about 100 beats per minute.

Accepted Answer

A)  cardiac accelerator nerves 
B)  chemoreceptors 
C)  cardiovascular center 
D)  sinoatrial node 
E)  proprioceptors 
A)  cardiac accelerator nerves 
B)  chemoreceptors 
C)  cardiovascular center 
D)  sinoatrial node 
E)  proprioceptors

Question 11

In the diagram, which is a semilunar valve?

Accepted Answer

A)  B 
B)  D 
C)  E 
D)  A 
E)  None of these choices 
A)  B 
B)  D 
C)  E 
D)  A 
E)  None of these choices

Question 12

Which layer of the pericardium consists of dense irregular connective tissue?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 13

During which phase does the aortic valve open?

Accepted Answer

A)  A 
B)  B 
C)  E 
D)  D 
E)  C 
A)  A 
B)  B 
C)  E 
D)  D 
E)  C

Question 14

Which of these periods represents greatest cardiac output?

Accepted Answer

A)  atrial diastole 
B)  ventricular diastole 
C)  atrial systole 
D)  ventricular systole 
A)  atrial diastole 
B)  ventricular diastole 
C)  atrial systole 
D)  ventricular systole

Question 15

To which side of the body is the apex pointed?

Accepted Answer

A)  at the midline 
B)  to the left 
C)  to the right 
D)  different for males and females 
E)  posteriorly 
A)  at the midline 
B)  to the left 
C)  to the right 
D)  different for males and females 
E)  posteriorly

Question 16

Explain the reason that the muscular wall of the left ventricle is thicker than the right.

Accepted Answer

The left ventricular muscle wa

Question 17

In the diagram, where is the posterior interventricular branch?

Accepted Answer

A)  B 
B)  D 
C)  E 
D)  F 
E)  C 
A)  B 
B)  D 
C)  E 
D)  F 
E)  C

Question 18

Which of the following extend into the auricle?

Accepted Answer

A)  pectinate muscles 
B)  interatrial septum 
C)  coronary sulcus 
D)  ventricle 
E)  chordae tendinae 
A)  pectinate muscles 
B)  interatrial septum 
C)  coronary sulcus 
D)  ventricle 
E)  chordae tendinae

Question 19

Which of the following consists of mesothelium and connective tissue?

Accepted Answer

A)  epicardium 
B)  myocardium 
C)  endocardium 
D)  pericardial cavity 
E)  fibrous pericardium 
A)  epicardium 
B)  myocardium 
C)  endocardium 
D)  pericardial cavity 
E)  fibrous pericardium

Question 20

Which of the following reduces heart rate?

Accepted Answer

A)  increased norepinephrine hormone 
B)  increased thyroid hormone 
C)  increased potassium levels 
D)  increased calcium levels 
E)  increased sympathetic stimulation 
A)  increased norepinephrine hormone 
B)  increased thyroid hormone 
C)  increased potassium levels 
D)  increased calcium levels 
E)  increased sympathetic stimulation

Exam 19: The Cardiovascular System: the Heart

This is used to reduce the friction between membranes of the heart.

The second heart sound represents which of the following events?

What is the layer that protects the heart?

This is comprised of a thin layer of endothelium overlying a thin layer of connective tissue.

In the diagram, where is the marginal branch?

In the diagram, these contain coronary blood vessels and a variable amount of fat.

Which of the following consists of inelastic dense irregular connective tissue?

This vessel distributes oxygenated blood to the myocardium.

In the diagram, where is an atrioventricular valve?

This part of the heart can initiate a contraction and can set a constant heart rate of about 100 beats per minute.

In the diagram, which is a semilunar valve?

Which layer of the pericardium consists of dense irregular connective tissue?

During which phase does the aortic valve open?

Which of these periods represents greatest cardiac output?

To which side of the body is the apex pointed?

Explain the reason that the muscular wall of the left ventricle is thicker than the right.

In the diagram, where is the posterior interventricular branch?

Which of the following extend into the auricle?

Which of the following consists of mesothelium and connective tissue?

Which of the following reduces heart rate?

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

Introduction to the Skeletal System

The Axial Skeleton

The Appendicular Skeleton

Articulations

Muscle Tissue

The Muscular System

Introduction to the Nervous System

The Central Nervous System

The Peripheral Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: Blood Vessels

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

The Urinary System

The Reproductive Systems and Development

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