Question 1

In an ECG pattern, the P wave is caused by

Accepted Answer

A) repolarization of atrial muscle fibers. 
B) repolarization of ventricular muscle fibers. 
C) depolarization of atrial muscle fibers. 
D) depolarization of ventricular muscle fibers. 
A) repolarization of atrial muscle fibers. 
B) repolarization of ventricular muscle fibers. 
C) depolarization of atrial muscle fibers. 
D) depolarization of ventricular muscle fibers. C

Question 2

The external carotid arteries branch to supply structures in the

Accepted Answer

A) shoulders. 
B) upper chest. 
C) eyeballs. 
D) neck and face. 
A) shoulders. 
B) upper chest. 
C) eyeballs. 
D) neck and face. D

Question 3

Blood from the face and scalp is drained by the

Accepted Answer

A) external jugular vein. 
B) subclavian vein. 
C) superior vena cava. 
D) cephalic vein. 
A) external jugular vein. 
B) subclavian vein. 
C) superior vena cava. 
D) cephalic vein. A

Question 4

In mitral valve prolapse, the mitral valve

Accepted Answer

A) is missing as a result of abnormal development. 
B) has an extra cusp. 
C) bulges into the left atrium during ventricular relaxation. 
D) bulges into the left atrium during ventricular contraction. 
A) is missing as a result of abnormal development. 
B) has an extra cusp. 
C) bulges into the left atrium during ventricular relaxation. 
D) bulges into the left atrium during ventricular contraction.

Question 5

Impulses that the vagus nerve carries to the heart

Accepted Answer

A) are parasympathetic and increase heart rate. 
B) are parasympathetic and decrease heart rate. 
C) are sympathetic and increase heart rate. 
D) are sympathetic and decrease heart rate. 
A) are parasympathetic and increase heart rate. 
B) are parasympathetic and decrease heart rate. 
C) are sympathetic and increase heart rate. 
D) are sympathetic and decrease heart rate.

Question 6

Listening with a stethoscope just to the right near the lower end of the sternum, sounds come most distinctly from the

Accepted Answer

A) aortic valve. 
B) tricuspid valve. 
C) pulmonary valve. 
D) mitral valve. 
A) aortic valve. 
B) tricuspid valve. 
C) pulmonary valve. 
D) mitral valve.

Question 7

Once cells in the SA node reach threshold,

Accepted Answer

A) an action potential is triggered. 
B) a heart attack occurs. 
C) nothing happens until the AV node is innervated. 
D) the heart stops beating. 
A) an action potential is triggered. 
B) a heart attack occurs. 
C) nothing happens until the AV node is innervated. 
D) the heart stops beating.

Question 8

Marjorie suffers from phlebitis. She has

Accepted Answer

A) inflammation of her veins. 
B) too much phlegm in her throat. 
C) extra capillaries in her legs. 
D) inflammation of her arteries. 
A) inflammation of her veins. 
B) too much phlegm in her throat. 
C) extra capillaries in her legs. 
D) inflammation of her arteries.

Question 9

The heart pumps about ________ liters of blood a day and contracts about ________ times in a lifetime.

Accepted Answer

A) 1,000; 1 billion 
B) 1,200; 2 billion 
C) 3,000; 2 billion 
D) 7,000; 2.5 billion 
A) 1,000; 1 billion 
B) 1,200; 2 billion 
C) 3,000; 2 billion 
D) 7,000; 2.5 billion

Question 10

The SA node relays nerve impulses into the AV bundle of the interventricular septum, and the AV node is responsible for the rhythmic contractions of the heart.

Accepted Answer

A) True 
 B)False

Question 11

Which artery is incorrectly matched to its location?

Accepted Answer

A) Inferior mesenteric artery; colon and rectum 
B) Thyrocervical arteries; thymus 
C) Celiac arteries; liver, spleen, and upper gastrointestinal tract 
D) Popliteal; behind the knee 
A) Inferior mesenteric artery; colon and rectum 
B) Thyrocervical arteries; thymus 
C) Celiac arteries; liver, spleen, and upper gastrointestinal tract 
D) Popliteal; behind the knee

Question 12

Doctors suggest that during long periods of sitting, you should flex and extend your feet at the ankles periodically and squeeze your calf muscles to assist with blood circulation. Why would non-exercise muscle contraction affect blood flow and cardiovascular health?

Accepted Answer

A) Contraction of muscles itself increases heart rate and burns calories, keeping the heart strong and assisting in maintaining healthy weight. 
B) Contraction of muscles stimulates the arteries to vasodilate, reducing blood pressure. 
C) Contraction of the leg muscles stimulates baroreceptors to signal the autonomic nervous system and decrease blood pressure and heart rate from multiple fronts. 
D) Contraction of the leg muscles squeezes leg veins, which functions as a pumping mechanism to return deoxygenated blood to the heart. 
A) Contraction of muscles itself increases heart rate and burns calories, keeping the heart strong and assisting in maintaining healthy weight. 
B) Contraction of muscles stimulates the arteries to vasodilate, reducing blood pressure. 
C) Contraction of the leg muscles stimulates baroreceptors to signal the autonomic nervous system and decrease blood pressure and heart rate from multiple fronts. 
D) Contraction of the leg muscles squeezes leg veins, which functions as a pumping mechanism to return deoxygenated blood to the heart.

Question 13

The visceral pericardium lines the pericardial cavity, whereas the parietal pericardium covers the surface of the heart.

Accepted Answer

A) True 
 B)False

Question 14

Blood flow through a capillary is controlled by a precapillary sphincter, which opens or closes due to the requirements of the cells supplied by the capillary.

Accepted Answer

A) True 
 B)False

Question 15

Blood flow to the right side of the heart muscle decreases due to constriction of the ________, and decreased blood flow to the heart tissue can result in ________.

Accepted Answer

A) left coronary artery; mitral valve prolapse 
B) right pulmonary artery; endocarditis 
C) right coronary artery; ischemia 
D) left coronary vein; myocardial infarction 
A) left coronary artery; mitral valve prolapse 
B) right pulmonary artery; endocarditis 
C) right coronary artery; ischemia 
D) left coronary vein; myocardial infarction

Question 16

Water and dissolved substances leave the arteriole end of a capillary due to ________, and enter the venule end of a capillary due to ________.

Accepted Answer

A) hydrostatic pressure being higher than osmotic pressure; active transport being greater than osmotic pressure 
B) osmotic pressure being higher than hydrostatic pressure; hydrostatic pressure being higher than osmotic pressure 
C) hydrostatic pressure being higher than osmotic pressure; osmotic pressure being higher than hydrostatic pressure 
D) osmosis; active transport 
A) hydrostatic pressure being higher than osmotic pressure; active transport being greater than osmotic pressure 
B) osmotic pressure being higher than hydrostatic pressure; hydrostatic pressure being higher than osmotic pressure 
C) hydrostatic pressure being higher than osmotic pressure; osmotic pressure being higher than hydrostatic pressure 
D) osmosis; active transport

Question 17

The pain of angina pectoris comes from a blockage in an artery that supplies the

Accepted Answer

A) left arm and shoulder. 
B) neck and jaw. 
C) heart. 
D) sternum. 
A) left arm and shoulder. 
B) neck and jaw. 
C) heart. 
D) sternum.

Question 18

The correct sequence of parts that carry cardiac impulses 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. 
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.

Question 19

Angiotensin II increases blood pressure by

Accepted Answer

A) increasing peripheral resistance. 
B) releasing renin. 
C) inhibiting the release of aldosterone. 
D) promoting the excretion of sodium. 
A) increasing peripheral resistance. 
B) releasing renin. 
C) inhibiting the release of aldosterone. 
D) promoting the excretion of sodium.

Question 20

The skeleton of the heart consists of

Accepted Answer

A) bone within the myocardium. 
B) bone within the interatrial septum. 
C) fibrous connective tissue in the endocardium. 
D) fibrous connective tissue encircling the atrioventricular orifices. 
A) bone within the myocardium. 
B) bone within the interatrial septum. 
C) fibrous connective tissue in the endocardium. 
D) fibrous connective tissue encircling the atrioventricular orifices.

Exam 15: Cardiovascular System

In an ECG pattern, the P wave is caused by

The external carotid arteries branch to supply structures in the

Blood from the face and scalp is drained by the

In mitral valve prolapse, the mitral valve

Impulses that the vagus nerve carries to the heart

Listening with a stethoscope just to the right near the lower end of the sternum, sounds come most distinctly from the

Once cells in the SA node reach threshold,

Marjorie suffers from phlebitis. She has

The heart pumps about ________ liters of blood a day and contracts about ________ times in a lifetime.

The SA node relays nerve impulses into the AV bundle of the interventricular septum, and the AV node is responsible for the rhythmic contractions of the heart.

Which artery is incorrectly matched to its location?

Doctors suggest that during long periods of sitting, you should flex and extend your feet at the ankles periodically and squeeze your calf muscles to assist with blood circulation. Why would non-exercise muscle contraction affect blood flow and cardiovascular health?

The visceral pericardium lines the pericardial cavity, whereas the parietal pericardium covers the surface of the heart.

Blood flow through a capillary is controlled by a precapillary sphincter, which opens or closes due to the requirements of the cells supplied by the capillary.

Blood flow to the right side of the heart muscle decreases due to constriction of the ________, and decreased blood flow to the heart tissue can result in ________.

Water and dissolved substances leave the arteriole end of a capillary due to ________, and enter the venule end of a capillary due to ________.

The pain of angina pectoris comes from a blockage in an artery that supplies the

The correct sequence of parts that carry cardiac impulses is

Angiotensin II increases blood pressure by

The skeleton of the heart consists of

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Integumentary System

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Divisions of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, Growth, and Development

Genetics and Genomics

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The heart pumps about liters of blood a day and contracts about times in a lifetime.

Blood flow to the right side of the heart muscle decreases due to constriction of the , and decreased blood flow to the heart tissue can result in .

Water and dissolved substances leave the arteriole end of a capillary due to , and enter the venule end of a capillary due to .