Question 1

What animal group is mismatched with its circulation system type (open or closed) ?

Accepted Answer

A)  earthworm-closed
B)  lobster-open
C)  killer whale-closed
D)  cricket-closedE) A) and B)
F) A) and C)

Question 2

Which animal is likely to have the circulatory pattern shown in the figure?

Accepted Answer

A)  frog
B)  mammal
C)  bird
D)  fishE) A) and D)
F) A) and C)

Question 3

Under what circumstance would your body experience an increase in erythropoietin secretion?

Accepted Answer

A)  if your hematocrit is elevated above normal levels
B)  if you just moved from New York City to start training for a marathon in the 'Mile-High' city of Denver, Colorado
C)  after drinking 5 liters of water in just 2 hours
D)  if you are suffering from hypertensionE) A) and B)
F) A) and C)

Question 4

Blood is pumped from the heart into the arterial system, which branches from arteries into fine _________.

Accepted Answer

A)  arterioles
B)  veins
C)  capillaries
D)  venulesE) A) and B)
F) A) and C)

Question 5

You are taking a lab practical exam.One station has a microscope slide of a cross section through an artery and vein.Which vessel is the artery?

Accepted Answer

A)  the vessel with more muscle tissue and elastic fibers in its wall
B)  the vessel with valves to prevent backflow
C)  the vessel lined only with endothelium
D)  the vessel with a greater overall diameterE) B) and D)
F) A) and C)

Question 6

The greatest metabolic advantage of a fish's two-chambered heart is

Accepted Answer

A)  its ability to pump blood under high pressure to all areas of the fish's body.
B)  its ability to maintain a constant blood pressure in the fish.
C)  its ability to stay full of blood even as it is emptying into the conus arteriosus.
D)  its ability to pump blood to the gills for gas exchange before the blood is pumped to the remaining areas of the body.E) None of the above
F) A) and B)

Question 7

Elephantiasis is an infectious disease in which blockage of the circulatory system by microscopic, parasitic roundworms results in a dramatic swelling of the tissues in the lower half of the body.What region is most likely blocked by these small, thread-like worms?

Accepted Answer

A)  the superior vena cava
B)  lymphatic vessels and/or lymph nodes
C)  the left atrium of the heart
D)  a pulmonary arteryE) C) and D)
F) A) and D)

Question 8

Which of the following solutes is NOT normally found in the plasma?

Accepted Answer

A)  metabolites, wastes, and hormones
B)  globulins
C)  hemoglobin
D)  ionsE) None of the above
F) All of the above

Question 9

What is true about about mammalian red blood cells?

Accepted Answer

A)  Red blood cells are also called leukocytes.
B)  A mature red blood cell is shaped like a biconcave disc because it has no nucleus.
C)  Red blood cells develop from lymphoid stem cells.
D)  Red blood cells contain albumin.E) All of the above
F) None of the above

Question 10

Jim is suffering from congestive heart failure, in which blood flow is backed up in his lungs and excess fluid is escaping the blood and accumulating in his lung tissue.If untreated, increasing pulmonary edema will lead to death by suffocation.What is the most-likely cause of Jim's congestive heart failure?

Accepted Answer

A)  Contraction of his right atrium is not keeping up with contraction of his left atrium.
B)  Contraction of his left ventricle is not keeping up with contraction of his right ventricle.
C)  Jim's pulmonary semilunar valve is not opening properly.
D)  Jim's SA node is malfunctioning.E) None of the above
F) A) and B)

Question 11

What would be the physiological effect of an increase in the venous return to the heart?

Accepted Answer

A)  increased stroke volume
B)  decreased cardiac output
C)  increased sympathetic stimulation of the heart
D)  increased secretion of ADH (vasopressin) E) A) and B)
F) All of the above

Question 12

Changes in the arterial blood pressure are detected by __________ located in the walls of the carotid artery and the arch of the aorta.

Accepted Answer

A)  pacemakers
B)  osmoreceptors
C)  Purkinje fibers
D)  baroreceptorsE) C) and D)
F) A) and B)

Question 13

Which secreted molecule is LEAST likely to effect a significant change in blood pressure?

Accepted Answer

A)  antidiuretic hormone
B)  aldosterone
C)  nitric oxide
D)  high-density lipoproteinE) None of the above
F) B) and C)

Question 14

One mechanism that some animals use to limit heat loss in cold environments is

Accepted Answer

A)  vasoconstriction of veins.
B)  vasoconstriction of the precapillary sphincters in the skin.
C)  increasing cardiac output.
D)  vasodilation of below surface blood vessels.E) B) and D)
F) A) and B)

Question 15

All of the following are functions of the circulatory system EXCEPT

Accepted Answer

A)  blood clotting and immune defense.
B)  temperature regulation.
C)  oxygen, nutrient, and waste transport.
D)  creation of red and white blood cells.E) None of the above
F) All of the above

Question 16

The liquid portion of blood that contains metabolites, wastes, hormones, ions, and a variety of proteins is called the _______________.

Accepted Answer

A)  plasma
B)  edema
C)  platelet
D)  eosinophilE) B) and D)
F) B) and C)

Question 17

You are taking a lab practical exam, and one station has pins in various internal structures of a bisected mammalian heart.You can orient yourself without picking up and examining the exterior of the heart because

Accepted Answer

A)  the width of the external wall of the right ventricle is thicker than all the other chamber walls.
B)  the width of the external wall of the left ventricle is thicker than all the other chamber walls.
C)  the width of the external wall of the left atrium is thicker than all the other chamber walls.
D)  the width of the external wall of the right atrium is thicker than all the other chamber walls.E) B) and C)
F) C) and D)

Question 18

A nurse takes your blood pressure during your annual examination, and she enters a reading of 115/70 in your medical chart.These numbers mean that the

Accepted Answer

A)  pressure in your brachial artery during ventricular contraction is 115, while the pressure during ventricular relaxation is 70.
B)  nurse heard sounds through the stethoscope only when the pressure in your brachial artery was exactly 115 and again when it was exactly 70.
C)  pressure in the ventricles of the heart is 115 when the ventricles are contracting and 70 when the ventricles are relaxing.
D)  diastolic pressure is 115 and the systolic pressure is 70.E) A) and B)
F) A) and C)

Question 19

In the blood clotting cascade mechanism, which specific enzyme catalyzes the conversion of fibrinogen to fibrin?

Accepted Answer

A)  renin
B)  thrombin
C)  albumin
D)  angiotensinE) B) and D)
F) None of the above

Question 20

Exchange of gases and metabolites between the blood and tissues occurs in the

Accepted Answer

A)  arteries.
B)  arterioles.
C)  capillaries.
D)  venules.E) B) and D)
F) A) and D)

Exam 49: The Circulatory System

Which secreted molecule is LEAST likely to effect a significant change in blood pressure?

Correct Answer
verified

One mechanism that some animals use to limit heat loss in cold environments is

Correct Answer
verified

What is true about about mammalian red blood cells?

Correct Answer
verified

The liquid portion of blood that contains metabolites, wastes, hormones, ions, and a variety of proteins is called the _______________.

Correct Answer
verified

What animal group is mismatched with its circulation system type (open or closed) ?

Correct Answer
verified

Correct Answer
verified

The greatest metabolic advantage of a fish's two-chambered heart is

Correct Answer
verified

All of the following are functions of the circulatory system EXCEPT

Correct Answer
verified

Blood is pumped from the heart into the arterial system, which branches from arteries into fine _________.

Correct Answer
verified

Under what circumstance would your body experience an increase in erythropoietin secretion?

Correct Answer
verified

Elephantiasis is an infectious disease in which blockage of the circulatory system by microscopic, parasitic roundworms results in a dramatic swelling of the tissues in the lower half of the body.What region is most likely blocked by these small, thread-like worms?

Correct Answer
verified

A nurse takes your blood pressure during your annual examination, and she enters a reading of 115/70 in your medical chart.These numbers mean that the

Correct Answer
verified

Changes in the arterial blood pressure are detected by __________ located in the walls of the carotid artery and the arch of the aorta.

Correct Answer
verified

What would be the physiological effect of an increase in the venous return to the heart?

Correct Answer
verified

Which of the following solutes is NOT normally found in the plasma?

Correct Answer
verified

In the blood clotting cascade mechanism, which specific enzyme catalyzes the conversion of fibrinogen to fibrin?

Correct Answer
verified

You are taking a lab practical exam, and one station has pins in various internal structures of a bisected mammalian heart.You can orient yourself without picking up and examining the exterior of the heart because

Correct Answer
verified

Which animal is likely to have the circulatory pattern shown in the figure?

Correct Answer
verified

You are taking a lab practical exam.One station has a microscope slide of a cross section through an artery and vein.Which vessel is the artery?

Correct Answer
verified

Exchange of gases and metabolites between the blood and tissues occurs in the

Correct Answer
verified

Exam 49: The Circulatory System

Which secreted molecule is LEAST likely to effect a significant change in blood pressure?

Correct AnswerverifiedShow Answer

One mechanism that some animals use to limit heat loss in cold environments is

Correct AnswerverifiedShow Answer

What is true about about mammalian red blood cells?

Correct AnswerverifiedShow Answer

The liquid portion of blood that contains metabolites, wastes, hormones, ions, and a variety of proteins is called the _______________.

Correct AnswerverifiedShow Answer

What animal group is mismatched with its circulation system type (open or closed) ?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

The greatest metabolic advantage of a fish's two-chambered heart is

Correct AnswerverifiedShow Answer

All of the following are functions of the circulatory system EXCEPT

Correct AnswerverifiedShow Answer

Blood is pumped from the heart into the arterial system, which branches from arteries into fine _________.

Correct AnswerverifiedShow Answer

Under what circumstance would your body experience an increase in erythropoietin secretion?

Correct AnswerverifiedShow Answer

Elephantiasis is an infectious disease in which blockage of the circulatory system by microscopic, parasitic roundworms results in a dramatic swelling of the tissues in the lower half of the body.What region is most likely blocked by these small, thread-like worms?

Correct AnswerverifiedShow Answer

A nurse takes your blood pressure during your annual examination, and she enters a reading of 115/70 in your medical chart.These numbers mean that the

Correct AnswerverifiedShow Answer

Changes in the arterial blood pressure are detected by __________ located in the walls of the carotid artery and the arch of the aorta.

Correct AnswerverifiedShow Answer

What would be the physiological effect of an increase in the venous return to the heart?

Correct AnswerverifiedShow Answer

Which of the following solutes is NOT normally found in the plasma?

Correct AnswerverifiedShow Answer

In the blood clotting cascade mechanism, which specific enzyme catalyzes the conversion of fibrinogen to fibrin?

Correct AnswerverifiedShow Answer

You are taking a lab practical exam, and one station has pins in various internal structures of a bisected mammalian heart.You can orient yourself without picking up and examining the exterior of the heart because

Correct AnswerverifiedShow Answer

Which animal is likely to have the circulatory pattern shown in the figure?

Correct AnswerverifiedShow Answer

You are taking a lab practical exam.One station has a microscope slide of a cross section through an artery and vein.Which vessel is the artery?

Correct AnswerverifiedShow Answer

Exchange of gases and metabolites between the blood and tissues occurs in the

Correct AnswerverifiedShow Answer

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