Question 1

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 transportE) A) and D)
F) All of the above

Question 2

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.E) B) and C)
F) All of the above

Question 3

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.E) None of the above
F) A) and C)

Question 4

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 infarctionE) A) and B)
F) A) and C)

Question 5

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.E) A) and B)
F) A) and C) C

Question 6

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.E) B) and C)
F) A) and D)

Question 7

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.E) None of the above
F) B) and D)

Question 8

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.E) A) and B)
F) A) and C) A

Question 9

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 kneeE) B) and D)
F) C) and D)

Question 10

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.E) B) and C)
F) A) and C)

Question 11

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.E) A) and B)
F) A) and C)

Question 12

The external carotid arteries branch to supply structures in the

Accepted Answer

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

Question 13

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 14

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.E) None of the above
F) A) and B)

Question 15

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.E) B) and C)
F) A) and C)

Question 16

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 17

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 billionE) A) and C)
F) None of the above

Question 18

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.E) B) and D)
F) A) and B)

Question 19

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.E) B) and C)
F) A) and D)

Question 20

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

Accepted Answer

A) True 
 B)False

Exam 15: Cardiovascular System

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

Correct AnswerverifiedShow Answer

In mitral valve prolapse, the mitral valve

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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 ________.

Correct AnswerverifiedShow Answer

In an ECG pattern, the P wave is caused by

Correct AnswerverifiedC

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

Correct AnswerverifiedShow Answer

The correct sequence of parts that carry cardiac impulses is

Correct AnswerverifiedShow Answer

Blood from the face and scalp is drained by the

Correct AnswerverifiedA

Which artery is incorrectly matched to its location?

Correct AnswerverifiedShow Answer

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?

Correct AnswerverifiedShow Answer

Marjorie suffers from phlebitis. She has

Correct AnswerverifiedShow Answer

The external carotid arteries branch to supply structures in the

Correct AnswerverifiedD

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.

Correct AnswerverifiedShow Answer

Angiotensin II increases blood pressure by

Correct AnswerverifiedShow Answer

Once cells in the SA node reach threshold,

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The skeleton of the heart consists of

Correct AnswerverifiedShow Answer

Impulses that the vagus nerve carries to the heart

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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 .

Correct Answer
verified

Correct Answer
verified
C

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
A

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified
D

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

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

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified