Question 1

In organisms that lack a circulatory system, what is the most common method of exchanging nutrients from the external environment to the body?

Accepted Answer

A)   diffusion
B)   osmosis
C)   absorption
D)   swallowing them whole
E)   engulfing them into their stomachF) B) and E)
G) A) and E)

Question 2

A heart murmur is caused by

Accepted Answer

A)   blocked arteries to the heart muscle.
B)   loss of oxygen to the left atrium.
C)   faulty semilunar valves.
D)   faulty atrioventricular valves.
E)   an irregular heartbeat.F) A) and B)
G) B) and E)

Question 3

Which of the following statements is an inacurrate statement regarding the movement of blood through capillary beds?

Accepted Answer

A)   Cold temperatures will cause the opening of sphincters to capillary beds in the skin.
B)   Eating will cause the opening of sphincters to capillary beds in the digestive tract.
C)   Exercise will cause the opening of sphincters to capillary beds in skeletal muscles.
D)   When the sphincters leading to a capillary bed are closed, the blood passes through a shunt.
E)   Red blood cells move through the capillaries in single file.F) C) and D)
G) C) and E)

Question 4

The osmotic pressure and buffering capacity of the blood is maintained by the

Accepted Answer

A)   red blood cells.
B)   plasma.
C)   lymph.
D)   white blood cells.
E)   platelets.F) C) and E)
G) C) and D)

Question 5

You are a doctor and an individual comes into your office. During the routine exam, you listen to the patient's heart sounds and notice that the first heart sound or "lub" is not as sharp or crisp as it should be. Your diagnosis of the patient's condition is

Accepted Answer

A)   atherosclerosis.
B)   a heart murmur.
C)   angina pectoris.
D)   thromboembolism.
E)   hypertension.F) B) and E)
G) None of the above

Question 6

Pulmonary arteries take

Accepted Answer

A)   O 2-poor blood to the lungs.
B)   O 2-rich blood to the lungs.
C)   O 2-rich blood to the body.
D)   O 2-poor blood to the right atrium.
E)   O 2-poor blood to the body.F) B) and C)
G) B) and D)

Question 7

In animals with four-chambered hearts, the left ventricle

Accepted Answer

A)   is larger as it pumps blood to the entire body.
B)   is larger as it pumps blood in the pulmonary circuit.
C)   pumps blood to the lungs.
D)   pumps blood to both the lungs and the body.
E)   pumps deoxygenated blood.F) All of the above
G) B) and E)

Question 8

In the figure shown here, the blood in the chamber indicated by the arrow marked with "X" 2-poor and O 2-rich blood. B)  is poor in oxygen. C)  is rich in oxygen. D)  will all be pumped to the lungs. E)  will all be pumped to the systemic capillaries of the body." class="answers-bank-image d-inline" rel="preload" >

Accepted Answer

A)   is a mixture of O 2-poor and O 2-rich blood.
B)   is poor in oxygen.
C)   is rich in oxygen.
D)   will all be pumped to the lungs.
E)   will all be pumped to the systemic capillaries of the body.F) C) and D)
G) A) and E)

Question 9

In the cardiac cycle, diastole is the

Accepted Answer

A)   relaxation of heart muscle.
B)   contraction of the atria.
C)   closing of the atrioventricular valves.
D)   opening of the semilunar valves.
E)   contraction of the ventricles.F) None of the above
G) B) and C)

Question 10

The vessel that leaves the heart, taking O 2-rich blood to the body,

Accepted Answer

A)   is large in diameter with a thick muscle and elastic layer.
B)   is called the pulmonary trunk.
C)   has many valves along its length to assist in blood flow.
D)   is comprised of a single layer of thin epithelial cells.
E)   is called the superior vena cava.F) B) and E)
G) A) and C)

Question 11

One of the functions of blood is to help regulate body temperature.

Accepted Answer

A) True 
 B)False

Question 12

If blood is blocked from reaching the heart muscle and it results in chest pain,

Accepted Answer

A)   this indicates a heart attack has occurred due to the lack of oxygen to part of the heart muscle.
B)   it is called angina pectoris.
C)   this indicates a heart attack has occurred due to a stroke.
D)   the likely cause is a heart murmur.
E)   a probable treatment is a blood transfusion.F) D) and E)
G) A) and E)

Question 13

Which one of the following statements is true about animals that do not have circulatory systems?

Accepted Answer

A)   They do not have tissues and organs.
B)   They may rely on diffusion for the transfer of gases, nutrients, and wastes.
C)   There are no animals without circulatory systems.
D)   They tend to have large bodies.
E)   The body cells are typically distant from the source of the oxygen, so the gas has to diffuse through several layers to reach all cells.F) A) and B)
G) B) and D)

Question 14

For which of the following is iron required?

Accepted Answer

A)   Iron stimulates formation of lymph.
B)   Iron forms part of hemoglobin, which transports oxygen.
C)   Iron prevents destruction of red blood cells.
D)   Iron prevents plaque formation in arteries.
E)   Iron forms part of white blood cells.F) C) and D)
G) A) and C)

Question 15

Which of the following is true about atrioventricular valves?

Accepted Answer

A)   One is found at the entrance to the pulmonary trunk.
B)   Their closing causes the second, shorter "dub" sound of the heartbeat.
C)   They are also known as the triscupid and bicuspid valves.
D)   One is found at the entrance to the aorta.
E)   They are composed of three half-moon shaped flaps.F) B) and C)
G) C) and D)

Question 16

Which organism has an open circulatory system?

Accepted Answer

A)   grasshopper
B)   frog
C)   eagle
D)   human
E)   sharkF) A) and B)
G) None of the above

Question 17

Formation of plaques in atherosclerosis can lead to hypertension, blood clots, stroke, and heart attacks.

Accepted Answer

A) True 
 B)False

Question 18

In order for cells in multicellular organisms to exchange gases, a circulatory system must be present.

Accepted Answer

A) True 
 B)False

Question 19

Which of the following collects all the venous blood from below the heart?

Accepted Answer

A)   pulmonary artery
B)   renal vein
C)   hepatic portal vein
D)   aorta
E)   inferior vena cavaF) B) and D)
G) B) and E)

Question 20

Taking up fat from digested foods along with excess tissue fluid and returning it to cardiovascular veins is a function of the

Accepted Answer

A)   circulatory system.
B)   systemic circuit.
C)   lymphatic system.
D)   pulmonary circuit.
E)   cardiovascular arteries.F) B) and C)
G) None of the above

Exam 23: The Transport Systems

In the figure shown here, the blood in the chamber indicated by the arrow marked with "X"

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Pulmonary arteries take

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Which of the following statements is an inacurrate statement regarding the movement of blood through capillary beds?

Correct AnswerverifiedShow Answer

Which of the following is true about atrioventricular valves?

Correct AnswerverifiedShow Answer

In the cardiac cycle, diastole is the

Correct AnswerverifiedShow Answer

One of the functions of blood is to help regulate body temperature.

Correct AnswerverifiedShow Answer

Which organism has an open circulatory system?

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For which of the following is iron required?

Correct AnswerverifiedShow Answer

Which one of the following statements is true about animals that do not have circulatory systems?

Correct AnswerverifiedShow Answer

Formation of plaques in atherosclerosis can lead to hypertension, blood clots, stroke, and heart attacks.

Correct AnswerverifiedShow Answer

Which of the following collects all the venous blood from below the heart?

Correct AnswerverifiedShow Answer

The vessel that leaves the heart, taking O 2-rich blood to the body,

Correct AnswerverifiedShow Answer

You are a doctor and an individual comes into your office. During the routine exam, you listen to the patient's heart sounds and notice that the first heart sound or "lub" is not as sharp or crisp as it should be. Your diagnosis of the patient's condition is

Correct AnswerverifiedShow Answer

A heart murmur is caused by

Correct AnswerverifiedShow Answer

Taking up fat from digested foods along with excess tissue fluid and returning it to cardiovascular veins is a function of the

Correct AnswerverifiedShow Answer

In animals with four-chambered hearts, the left ventricle

Correct AnswerverifiedShow Answer

In order for cells in multicellular organisms to exchange gases, a circulatory system must be present.

Correct AnswerverifiedShow Answer

If blood is blocked from reaching the heart muscle and it results in chest pain,

Correct AnswerverifiedShow Answer

The osmotic pressure and buffering capacity of the blood is maintained by the

Correct AnswerverifiedShow Answer

In organisms that lack a circulatory system, what is the most common method of exchanging nutrients from the external environment to the body?

Correct AnswerverifiedShow Answer

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The vessel that leaves the heart, taking O ₂-rich blood to the body,

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