Question 1

Why would having a four-chambered heart,as in birds and mammals,optimize efficiency of oxygen delivery to tissues?

Accepted Answer

A)   Diffusion of oxygen from oxygenated blood into tissues would be increased.
B)   Diffusion of oxygen from oxygenated blood into tissues would be decreased.
C)   Less energy would be required to pump oxygen into the blood.
D)   Less energy would be required to pump oxygen into the tissues.
E)   Less energy would be required to pump oxygen into the lungs.F) B) and C)
G) A) and E)

Question 2

An irregular heartbeat in which the ventricles do not fill completely could be due to a malfunction in the atriventricular node.

Accepted Answer

A) True 
 B)False

Question 3

Cardiac output may be increased by a

Accepted Answer

A)   greater-than-normal heart rate.
B)   lower-than-normal stroke volume.
C)   lower-than-normal stroke volume and heart rate.
D)   greater-than-normal stroke volume.
E)   greater-than-normal stroke volume and heart rate.F) C) and D)
G) A) and B)

Question 4

If blood pressure is too high,the brain _________ heart rate and causes blood vessels to _________.

Accepted Answer

A)   increases; dilate
B)   increases; constrict
C)   decreases; constrict
D)   decreases; dilate
E)   increases; ruptureF) C) and E)
G) A) and D)

Question 5

Vertebrates with a four-chambered heart include

Accepted Answer

A)   fish.
B)   nonavian reptiles.
C)   birds.
D)   amphibians.
E)   annelids.F) A) and B)
G) B) and D)

Question 6

Scientists preparing preserved animals often inject colored latex into the circulatory system to identify different kinds of vessels.What color of latex is likely to be seen escaping from some blood vessels in preserved fetal pigs if pink latex is injected on the arterial side and blue on the venous side?

Accepted Answer

A)   blue latex
B)   pink latex
C)   both colors mixed together
D)   spots of different colors in different parts of the pig
E)   None of the answer choices are correct.F) A) and B)
G) A) and C)

Question 7

Which vessel might be blocked if the heart itself was not being well oxygenated?

Accepted Answer

A)   aorta
B)   coronary artery
C)   carotid artery
D)   superior vena cava
E)   inferior vena cavaF) B) and E)
G) C) and D)

Question 8

A heart murmur is caused by

Accepted Answer

A)   a greater than normal force of contraction of the right atrium.
B)   a constriction of the pulmonary artery.
C)   blockage of the aorta.
D)   the heart valves not functioning properly.
E)   a greater-than-normal force of contraction of the left atrium.F) B) and D)
G) B) and C)

Question 9

Diastolic pressure reflects the

Accepted Answer

A)   contraction of the atria.
B)   relaxation of the atria.
C)   contraction of the ventricles.
D)   relaxation of the ventricles.
E)   heart rate.F) C) and E)
G) None of the above

Question 10

The force that blood exerts on artery walls is termed _____ pressure.

Accepted Answer

A)   venous
B)   gravitational
C)   blood
D)   osmotic
E)   pulmonaryF) B) and E)
G) B) and D) C

Question 11

When taking a person's blood pressure,after proper inflation of the cuff,the first pulse sound that is heard through the stethoscope indicates that blood is flowing through the artery past the cuff.The reading on the pressure gauge at this point represents

Accepted Answer

A)   that the heart is once again beating.
B)   the force of contraction of the atria.
C)   diastolic pressure.
D)   venous pressure.
E)   systolic pressure.F) C) and E)
G) A) and E) E

Question 12

The lymphatic system collects fluid that has leaked from blood capillaries,removes bacteria,and returns the cleansed fluid to the blood.

Accepted Answer

A) True 
 B)False

Question 13

The proteins needed to form blood clots are known as clotting factors.

Accepted Answer

A) True 
 B)False  True

Question 14

The abundant protein in blood,which is arguably the most critical for oxygen homeostasis in the body,is

Accepted Answer

A)   myoglobin.
B)   actin.
C)   fibrinogen.
D)   hemoglobin.
E)   myosin.F) B) and D)
G) C) and D)

Question 15

While arteries are usually full of oxygenated blood,the one major exception is the pulmonary artery.

Accepted Answer

A) True 
 B)False

Question 16

Each day the human heart sends a volume of blood equal to about _____________ liters through the body.

Accepted Answer

A)   50,000
B)   1000
C)   7000
D)   2000
E)   5000F) A) and E)
G) A) and C)

Question 17

The cellular components of blood that transport oxygen are

Accepted Answer

A)   leukocytes.
B)   erythrocytes.
C)   platelets.
D)   chondrocytes.
E)   osteocytes.F) D) and E)
G) B) and E)

Question 18

In lab,you are asked to decide what stain to use to examine certain cells in a blood sample.These cells will be full of bacteria that cells are destroying,so you pick a stain specific for

Accepted Answer

A)   erythrocytes.
B)   chondrocytes.
C)   platelets.
D)   leukocytes.
E)   osteocytes.F) All of the above
G) C) and D)

Question 19

The large vessels that carry blood to the heart are

Accepted Answer

A)   arteries.
B)   veins.
C)   capillaries.
D)   lymph vessels.
E)   sieve tubes.F) All of the above
G) B) and D)

Question 20

You are trying to explain a circulatory problem to a patient who is experiencing excessive blood pressure.The patient's brain is confused,acting as if pressure is lower than it is.This leads to the problem,you tell the patient,because if blood pressure if perceived to be too low,the brain __________ heart rate and causes blood vessels to _________.

Accepted Answer

A)   increases; dilate
B)   decreases; dilate
C)   increases; constrict
D)   decreases; constrict
E)   increases; ruptureF) A) and E)
G) All of the above

Exam 30: The Circulatory System

Why would having a four-chambered heart,as in birds and mammals,optimize efficiency of oxygen delivery to tissues?

Correct Answer
verified

An irregular heartbeat in which the ventricles do not fill completely could be due to a malfunction in the atriventricular node.

Correct Answer
verified

Cardiac output may be increased by a

Correct Answer
verified

If blood pressure is too high,the brain _ heart rate and causes blood vessels to _.

Correct Answer
verified

Vertebrates with a four-chambered heart include

Correct Answer
verified

Correct Answer
verified

Which vessel might be blocked if the heart itself was not being well oxygenated?

Correct Answer
verified

A heart murmur is caused by

Correct Answer
verified

Diastolic pressure reflects the

Correct Answer
verified

The force that blood exerts on artery walls is termed _____ pressure.

Correct Answer
verified
C

When taking a person's blood pressure,after proper inflation of the cuff,the first pulse sound that is heard through the stethoscope indicates that blood is flowing through the artery past the cuff.The reading on the pressure gauge at this point represents

Correct Answer
verified
E

The lymphatic system collects fluid that has leaked from blood capillaries,removes bacteria,and returns the cleansed fluid to the blood.

Correct Answer
verified

The proteins needed to form blood clots are known as clotting factors.

Correct Answer
verified
True

The abundant protein in blood,which is arguably the most critical for oxygen homeostasis in the body,is

Correct Answer
verified

While arteries are usually full of oxygenated blood,the one major exception is the pulmonary artery.

Correct Answer
verified

Each day the human heart sends a volume of blood equal to about _____________ liters through the body.

Correct Answer
verified

The cellular components of blood that transport oxygen are

Correct Answer
verified

In lab,you are asked to decide what stain to use to examine certain cells in a blood sample.These cells will be full of bacteria that cells are destroying,so you pick a stain specific for

Correct Answer
verified

The large vessels that carry blood to the heart are

Correct Answer
verified

Correct Answer
verified

Exam 30: The Circulatory System

Why would having a four-chambered heart,as in birds and mammals,optimize efficiency of oxygen delivery to tissues?

Correct AnswerverifiedShow Answer

An irregular heartbeat in which the ventricles do not fill completely could be due to a malfunction in the atriventricular node.

Correct AnswerverifiedShow Answer

Cardiac output may be increased by a

Correct AnswerverifiedShow Answer

If blood pressure is too high,the brain _________ heart rate and causes blood vessels to _________.

Correct AnswerverifiedShow Answer

Vertebrates with a four-chambered heart include

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Which vessel might be blocked if the heart itself was not being well oxygenated?

Correct AnswerverifiedShow Answer

A heart murmur is caused by

Correct AnswerverifiedShow Answer

Diastolic pressure reflects the

Correct AnswerverifiedShow Answer

The force that blood exerts on artery walls is termed _____ pressure.

Correct AnswerverifiedC

When taking a person's blood pressure,after proper inflation of the cuff,the first pulse sound that is heard through the stethoscope indicates that blood is flowing through the artery past the cuff.The reading on the pressure gauge at this point represents

Correct AnswerverifiedE

The lymphatic system collects fluid that has leaked from blood capillaries,removes bacteria,and returns the cleansed fluid to the blood.

Correct AnswerverifiedShow Answer

The proteins needed to form blood clots are known as clotting factors.

Correct AnswerverifiedTrue

The abundant protein in blood,which is arguably the most critical for oxygen homeostasis in the body,is

Correct AnswerverifiedShow Answer

While arteries are usually full of oxygenated blood,the one major exception is the pulmonary artery.

Correct AnswerverifiedShow Answer

Each day the human heart sends a volume of blood equal to about _____________ liters through the body.

Correct AnswerverifiedShow Answer

The cellular components of blood that transport oxygen are

Correct AnswerverifiedShow Answer

In lab,you are asked to decide what stain to use to examine certain cells in a blood sample.These cells will be full of bacteria that cells are destroying,so you pick a stain specific for

Correct AnswerverifiedShow Answer

The large vessels that carry blood to the heart are

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

If blood pressure is too high,the brain _ heart rate and causes blood vessels to _.

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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C

Correct Answer
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E

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Correct Answer
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True

Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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Correct Answer
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