Question 1

Briefly describe what is happening at the stage of the ECG labeled 5 in the diagram.

Accepted Answer

The contractile fibers of the ventricles are repolarizing,which generates the T wave in the ECG.

Question 2

In the diagram,where is the left auricle of the left atrium?

Accepted Answer

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

Question 3

During which of the following periods does the largest volume of blood enter the arteries?

Accepted Answer

A) atrial diastole 
B) ventricular diastole 
C) atrial systole 
D) ventricular systole 
E) the volume is about the same during each period 
A) atrial diastole 
B) ventricular diastole 
C) atrial systole 
D) ventricular systole 
E) the volume is about the same during each period D

Question 4

The visceral layer of the serous pericardium is also considered to be the

Accepted Answer

A) epicardium 
B) myocardium 
C) endocardium 
D) fibrous pericardium 
E) None of the answer selections is correct 
A) epicardium 
B) myocardium 
C) endocardium 
D) fibrous pericardium 
E) None of the answer selections is correct

Question 5

Which valve below prevents blood from flowing back into the right ventricle?

Accepted Answer

A) Tricuspid valve 
B) Bicuspid valve 
C) Pulmonary semilunar valve 
D) Aortic semilunar valve 
E) Mitral valve 
A) Tricuspid valve 
B) Bicuspid valve 
C) Pulmonary semilunar valve 
D) Aortic semilunar valve 
E) Mitral valve

Question 6

Contraction of the ventricles of the heart leads to blood moving directly

Accepted Answer

A) into arteries. 
B) into capillaries. 
C) into veins. 
D) through an atrioventricular valve. 
E) through the apex. 
A) into arteries. 
B) into capillaries. 
C) into veins. 
D) through an atrioventricular valve. 
E) through the apex.

Question 7

Isovolumetric contraction is the phase of the cardiac cycle in which

Accepted Answer

A) the semilunar valves are open. 
B) ventricular repolarization occurs. 
C) atrial depolarization occurs. 
D) oxygenated blood leaves the heart into the systemic circulation. 
E) ventricular pressure increases and ventricular volume remains the same. 
A) the semilunar valves are open. 
B) ventricular repolarization occurs. 
C) atrial depolarization occurs. 
D) oxygenated blood leaves the heart into the systemic circulation. 
E) ventricular pressure increases and ventricular volume remains the same.

Question 8

Which of the following is used to reduce friction between the layers of membranes surrounding the heart?

Accepted Answer

A) Synovial fluid 
B) Endocardium 
C) Pleural fluid 
D) Pericardial fluid 
E) Capillary endothelium 
A) Synovial fluid 
B) Endocardium 
C) Pleural fluid 
D) Pericardial fluid 
E) Capillary endothelium

Question 9

The membrane that surrounds and protects the heart is called the

Accepted Answer

A) pericardium. 
B) pleura. 
C) myocardium. 
D) mediastinum. 
E) endocardium. 
A) pericardium. 
B) pleura. 
C) myocardium. 
D) mediastinum. 
E) endocardium.

Question 10

Which labeled structure shown in the diagram is a remnant of fetal circulation that is not directly involved in adult circulation?

Accepted Answer

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

Question 11

In comparison to skeletal muscle fibers,the contractile fibers of the heart are depolarized for [___] period of time.
Dropdown Choices:
a longer
a shorter
a variable
the same

Accepted Answer

The answer of In comparison to skeletal muscle fibers,the contractile...

Question 12

The second heart sound (dupp)closely follows which of the events listed below?

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 13

Which labeled structure in the figure is the ligamentum arteriosum? \

Accepted Answer

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

Question 14

Which labeled structure shown in the diagram is a pouch-like extension that serves to slightly increase the capacity of an atrium?

Accepted Answer

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

Question 15

The volume of blood ejected from the left ventricle into the aorta each minute is called the

Accepted Answer

A) cardiac output. 
B) cardiac input. 
C) stroke volume. 
D) heart rate. 
E) pulse pressure. 
A) cardiac output. 
B) cardiac input. 
C) stroke volume. 
D) heart rate. 
E) pulse pressure.

Question 16

Through which structure does blood pass from the right atrium to the right ventricle?

Accepted Answer

A) Bicuspid valve 
B) Interventricular septum 
C) Tricuspid valve 
D) Mitral valve 
E) Ascending aorta 
A) Bicuspid valve 
B) Interventricular septum 
C) Tricuspid valve 
D) Mitral valve 
E) Ascending aorta

Question 17

What is the function of the foramen ovale during fetal life?

Accepted Answer

A) Allowing blood to flow directly from the right atrium into the left atrium. 
B) Allowing blood to flow directly from the right ventricle into the left ventricle. 
C) Serves as a valve in the vena cava to regulate venous blood flow. 
D) Prevents back flow of blood from aorta into the left ventricle. 
E) Prevents back flow of blood from pulmonary trunk into the right ventricle. 
A) Allowing blood to flow directly from the right atrium into the left atrium. 
B) Allowing blood to flow directly from the right ventricle into the left ventricle. 
C) Serves as a valve in the vena cava to regulate venous blood flow. 
D) Prevents back flow of blood from aorta into the left ventricle. 
E) Prevents back flow of blood from pulmonary trunk into the right ventricle.

Question 18

Discuss the common nutrient sources used by cardiac muscle to produce ATP in a resting individual.

Accepted Answer

At rest,the heart relies exclusively on

Question 19

In the diagram,which labeled structure is the pulmonary semilunar valve?

Accepted Answer

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

Question 20

Which labeled blood vessel shown in the diagram is the left common carotid artery?

Accepted Answer

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

Exam 20: The Cardiovascular System: the Heart

Briefly describe what is happening at the stage of the ECG labeled 5 in the diagram.

In the diagram,where is the left auricle of the left atrium?

During which of the following periods does the largest volume of blood enter the arteries?

The visceral layer of the serous pericardium is also considered to be the

Which valve below prevents blood from flowing back into the right ventricle?

Contraction of the ventricles of the heart leads to blood moving directly

Isovolumetric contraction is the phase of the cardiac cycle in which

Which of the following is used to reduce friction between the layers of membranes surrounding the heart?

The membrane that surrounds and protects the heart is called the

Which labeled structure shown in the diagram is a remnant of fetal circulation that is not directly involved in adult circulation?

In comparison to skeletal muscle fibers,the contractile fibers of the heart are depolarized for [___] period of time. Dropdown Choices: a longer a shorter a variable the same

The second heart sound (dupp)closely follows which of the events listed below?

Which labeled structure in the figure is the ligamentum arteriosum? \

Which labeled structure shown in the diagram is a pouch-like extension that serves to slightly increase the capacity of an atrium?

The volume of blood ejected from the left ventricle into the aorta each minute is called the

Through which structure does blood pass from the right atrium to the right ventricle?

What is the function of the foramen ovale during fetal life?

Discuss the common nutrient sources used by cardiac muscle to produce ATP in a resting individual.

In the diagram,which labeled structure is the pulmonary semilunar valve?

Which labeled blood vessel shown in the diagram is the left common carotid artery?

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

The Integumentary System

The Skeletal System: Bone Tissue

The Skeletal System: the Axial Skeleton

The Skeletal System: The Appendicular Skeleton

Joints

Muscular Tissue

The Muscular System

Nervous Tissue

The Spinal Cord and Spinal Nerves

The Brain and Cranial Nerves

The Autonomic Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: Blood Vessels and Hemodynamics

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Nutrition

The Urinary System

Fluid, Electrolyte, and Acidbase Homeostasis

The Reproductive Systems

Development and Inheritance

Filters

Which labeled structure in the figure is the ligamentum arteriosum? \ $Which labeled structure in the figure is the ligamentum arteriosum? \$