Question 1

The stomach produces enzymes that begin the break down of ____________.

Accepted Answer

A)   carbohydrates
B)   proteins
C)   fats
D)   sugars

Question 2

Enzymatic digestion of proteins starts in the

Accepted Answer

A)   mouth.
B)   esophagus.
C)   stomach.
D)   small intestine.

Question 3

Each nephron

Accepted Answer

A)   is associated with a lacteal.
B)   is surrounded by capillaries.
C)   has blood running through it.
D)   secretes glucose.

Question 4

A reduced ability of the blood to carry oxygen is

Accepted Answer

A)   anemia.
B)   edema.
C)   asthma.
D)   emphysema.

Question 5

The semilunar valves are located in the

Accepted Answer

A)   left atrium.
B)   major veins that enter the heart.
C)   pulmonary artery and aorta.
D)   right atrium.

Question 6

Blood is carried from the heart to the lungs by the

Accepted Answer

A)   aorta.
B)   pulmonary artery.
C)   pulmonary veins.
D)   vena cava.

Question 7

Valves in veins assure that

Accepted Answer

A)   lymph will be formed.
B)   blood in veins must flow back to the heart.
C)   the flow of blood through veins is regulated.
D)   veins will not receive blood that is under too great a pressure.

Question 8

The presence of lacteals and capillaries in villi is important because

Accepted Answer

A)   the villi need nourishment.
B)   they are involved in transporting nutrients from the intestine.
C)   they are involved in transporting enzymes to the intestine.
D)   they increase the surface area of the lining of the intestine.

Question 9

Breathing is most directly controlled by (the)

Accepted Answer

A)   heart.
B)   lungs.
C)   diaphragm.
D)   conscious thought.

Question 10

Arteries differ from veins in that

Accepted Answer

A)   veins carry blood to the internal organs of the body.
B)   arteries have valves that veins do not have.
C)   veins have thinner walls than arteries.
D)   the pressure in veins is greater than that in arteries.

Question 11

A condition that is the result of tissue fluid buildup causing the tissue to swell is

Accepted Answer

A)   cancer.
B)   edema.
C)   tonsilitis.
D)   cryptorchidism.

Question 12

The functional unit of the kidney is called

Accepted Answer

A)   Bowman's capsule.
B)   a collecting duct.
C)   a nephron.
D)   a loop of Henle.

Question 13

Where does the exchange of materials between cells and the blood occur?

Accepted Answer

A)   arteries.
B)   veins.
C)   capillaries.
D)   All of these exchange materials.

Question 14

Asthma is caused by

Accepted Answer

A)   contraction of the bronchioles.
B)   reduced number of alveoli.
C)   lack of hemoglobin in the blood.
D)   reduced flow of blood to the lungs.

Question 15

The job of this organ is to cleanse the blood of pathogens and worn-out or damaged RBCs.

Accepted Answer

A)   tonsils
B)   nodes
C)   liver
D)   alveolus

Question 16

Which of the following sets of organs are involved in producing enzymes that are involved in breaking down proteins to amino acids?

Accepted Answer

A)   Salivary glands, stomach, pancreas, liver
B)   Liver, stomach, pancreas, intestinal lining
C)   Pancreas, intestinal lining, salivary glands, stomach
D)   Stomach, pancreas, intestinal lining

Question 17

The primary function of the loop of Henle is

Accepted Answer

A)   removal of glucose.
B)   removal of water from the nephron.
C)   secretion of hydrogen ions.
D)   to produce liquid for the nephron.

Question 18

What do all of the following have in common; alveolus, villus, nephron?

Accepted Answer

A)   They are all involved in producing enzymes.
B)   They are all involved in exchanging materials with blood in capillaries.
C)   They are involved in getting things into cells.
D)   They have nothing in common.

Question 19

Breathing rate increases during exercise because

Accepted Answer

A)   the heart is beating more rapidly.
B)   there is less oxygen in the blood.
C)   there is more carbon dioxide in the blood.
D)   there is an increase in blood pH.

Question 20

Most of the carbon dioxide in the blood is

Accepted Answer

A)   dissolved in the plasma.
B)   attached to hemoglobin molecules.
C)   present as tiny bubbles in the blood.
D)   carried as bicarbonate ions.

Exam 24: Materials Exchange in the Body

Which of the following sets of organs are involved in producing enzymes that are involved in breaking down proteins to amino acids?

Correct AnswerverifiedShow Answer

Breathing rate increases during exercise because

Correct AnswerverifiedShow Answer

The semilunar valves are located in the

Correct AnswerverifiedShow Answer

The functional unit of the kidney is called

Correct AnswerverifiedShow Answer

Most of the carbon dioxide in the blood is

Correct AnswerverifiedShow Answer

Arteries differ from veins in that

Correct AnswerverifiedShow Answer

Blood is carried from the heart to the lungs by the

Correct AnswerverifiedShow Answer

A condition that is the result of tissue fluid buildup causing the tissue to swell is

Correct AnswerverifiedShow Answer

Each nephron

Correct AnswerverifiedShow Answer

The job of this organ is to cleanse the blood of pathogens and worn-out or damaged RBCs.

Correct AnswerverifiedShow Answer

The presence of lacteals and capillaries in villi is important because

Correct AnswerverifiedShow Answer

Asthma is caused by

Correct AnswerverifiedShow Answer

The primary function of the loop of Henle is

Correct AnswerverifiedShow Answer

The stomach produces enzymes that begin the break down of ____________.

Correct AnswerverifiedShow Answer

Valves in veins assure that

Correct AnswerverifiedShow Answer

Where does the exchange of materials between cells and the blood occur?

Correct AnswerverifiedShow Answer

Breathing is most directly controlled by (the)

Correct AnswerverifiedShow Answer

A reduced ability of the blood to carry oxygen is

Correct AnswerverifiedShow Answer

What do all of the following have in common; alveolus, villus, nephron?

Correct AnswerverifiedShow Answer

Enzymatic digestion of proteins starts in the

Correct AnswerverifiedShow Answer

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