Question 1

What is the advantage of a closed circulatory system over an open one?

Accepted Answer

A)  A closed system carries more blood. 
B)  Blood flows more slowly in a closed system. 
C)  A closed system moves blood more efficiently. 
D)  In a closed system, the blood comes nearer to each cell. 
E)  There are more blood cells in a closed system.

Question 2

When interstitial fluid enters the lymphatic system, it becomes known as

Accepted Answer

A)  plasma. 
B)  interstitial fluid. 
C)  lymph. 
D)  macrophage. 
E)  globulin.

Question 3

Of the following answer choices, which would NOT be found in a closed circulatory system?

Accepted Answer

A)  Heart 
B)  Hemocoel 
C)  Blood 
D)  Vessels

Question 4

Children who are severely deficient in protein may develop swollen bodies (a condition called kwashiorkor) due to an accumulation of fluid in their tissues. Based on your knowledge of the role of albumin in the blood, explain how this might happen.

Accepted Answer

The answer of Children who are severely deficient in protein...

Question 5

Ventricles force blood directly into the

Accepted Answer

A)  capillaries. 
B)  arteries. 
C)  veins. 
D)  arterioles. 
E)  venules.

Question 6

Imagine that you are about to give blood for the first time. While watching other donors around you, you become pale and have to sit down before you faint. Which vessels constricted to produce this nervous side effect?

Accepted Answer

A)  Venules 
B)  Veins 
C)  Capillaries 
D)  Arterioles 
E)  Arteries

Question 7

In fishes, blood leaving the heart goes directly to the

Accepted Answer

A)  brain. 
B)  kidney. 
C)  swimming muscles. 
D)  gills.

Question 8

Which of the following has the lowest pressure?

Accepted Answer

A)  Venules 
B)  Arteries 
C)  Capillaries 
D)  Arterioles 
E)  Veins

Question 9

What happens to the speed of blood as it passes through the capillaries?

Accepted Answer

A)  It decreases greatly. 
B)  It increases slightly. 
C)  It decreases slightly. 
D)  It increases greatly. 
E)  It depends on the location of the capillaries.

Question 10

In a random screening of athletes at a recent event, a runner was disqualified for testing positive for an injected form of erythropoietin. Which of the following is a consequence of extra erythropoietin in the circulatory system?

Accepted Answer

A)  More red blood cells 
B)  Low blood pressure 
C)  A low white blood cell count 
D)  ʺThinʺ blood that does not clot efficiently

Question 11

In an average person, how many liters of interstitial fluid leave the capillaries each day?

Accepted Answer

A)  1 
B)  2 
C)  8 
D)  3 to 4 
E)  12

Question 12

The head of a giraffe is 5 meters above its heart. Compared to humans, giraffes have

Accepted Answer

A)  higher systolic blood pressure. 
B)  less blood volume. 
C)  veins of smaller diameter. 
D)  lower systolic blood pressure.

Question 13

In vertebrates, which heart chamber supplies oxygenated blood to the body cells?

Accepted Answer

A)  Left atrium 
B)  Right atrium 
C)  Right ventricle 
D)  Left ventricle

Question 14

All of the following are functions of the lymphatic system EXCEPT

Accepted Answer

A)  transporting oxygen to the lungs. 
B)  returning dissolved materials to the circulation. 
C)  returning fluid to the circulatory system. 
D)  transporting fats to the circulatory system. 
E)  defending the body.

Question 15

Some athletes use ʺblood doping,ʺ in which additional red blood cells are added to the blood prior to the competition. What is the effect of blood doping?

Accepted Answer

A)  It increases oxygen delivery to muscles. 
B)  It changes the blood type. 
C)  It makes blood thinner so that it flows faster. 
D)  It decreases blood pressure.

Question 16

If a personʹs blood pressure is 120/70, the 70 refers to the pressure

Accepted Answer

A)  during contraction of the vena cava. 
B)  during relaxation of the heart. 
C)  during contraction of both ventricles. 
D)  lowering between contractions. 
E)  during contraction of the left ventricle only.

Question 17

Which of these blood cells have no nucleus in mammals?

Accepted Answer

A)  Lymphocytes 
B)  White blood cells 
C)  Red blood cells 
D)  All blood cells in mammals lack nuclei.

Question 18

Based on this figure, which of the following occurs first?

Accepted Answer

A)  Prothrombin conversion 
B)  Fibrinogen conversion 
C)  Fibrin production

Question 19

What is the correct sequence of blood vessels from the heart through the body and back to the heart?

Accepted Answer

A)  Veins, venules, arteries, arterioles, capillaries 
B)  Veins, venules, capillaries, arterioles, arteries 
C)  Arteries, arterioles, capillaries, venules, veins 
D)  Arterioles, arteries, capillaries, veins, venules 
E)  Arteries, arterioles, veins, venules, capillaries

Question 20

Why is HDL cholesterol considered to be ʺgoodʺ cholesterol?

Accepted Answer

The answer of Why is HDL cholesterol considered to be...

Exam 33: Circulation