05 Jan b. medullary cords.

Question 1

2.50 points out of 2.50

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Lymph containing a high lipid content is called

Select one:

a. chyle.

b. chyme.

c. lacteal.

d. interstitial fluid.

Question 2

2.50 points out of 2.50

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The lymphatic system is involved in

Select one:

a. fat absorption from the digestive tract.

b. transporting lymph from the intestines to the liver.

c. maintenance of pH in the tissues.

d. production of erythrocytes.

e. protein metabolism.

Question 3

2.50 points out of 2.50

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Lymph movement is assisted by

Select one:

a. contraction of skeletal muscle.

b. contraction of smooth muscle in lymph vessel.

c. pressure changes in the thorax during respiration.

d. compression of lymphatic vessels.

e. All of these choices are .

Question 4

2.50 points out of 2.50

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Lacteals are

Select one:

a. a type of lymphocyte.

b. a nonspecific defense.

c. lymphatic vessels in the lining of the small intestine.

d. the sinuses inside a lymph node.

e. germinal centers.

Question 5

2.50 points out of 2.50

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A woman has her right breast and right axillary lymph nodes removed. Which of the following might occur?

Select one:

a. Cisterna chyli flow increases.

b. The thoracic duct would be severed.

c. Right lymphatic duct drainage decreases causing edema in the right arm.

d. Lymph drainage would be affected in her left arm.

e. Lymph drainage would be affected in both legs.

Question 6

2.50 points out of 2.50

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Structurally, lymph vessel walls are most similar to

Select one:

a. veins.

b. arteries.

c. arterioles.

d. capillaries.

e. venules.

Question 7

2.50 points out of 2.50

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The spleen

Select one:

a. filters damaged red blood cells from the blood.

b. changes undifferentiated lymphocytes into competent lymphocytes.

c. is necessary for life. It can’t be removed without causing death.

d. produces several different hormones with unknown function.

e. has additional digestive functions.

Question 8

2.50 points out of 2.50

Question text

Which of the following is NOT a function of the lymphatic system?

Select one:

a. Defending from infection caused by microorganisms and other foreign substances.

b. Aiding in erythropoiesis of red blood cells.

c. Maintaining fluid balance by returning excess interstitial fluid to the blood.

d. Absorbing and transporting lipids from the digestive tract.

Question 9

2.50 points out of 2.50

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Peyer patches are lymphatic nodules found in the

Select one:

a. lymph nodes.

b. spleen and tonsils.

c. appendix and tonsils.

d. small intestine and appendix.

Question 10

2.50 points out of 2.50

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Lymph nodes are surrounded by a dense connective tissue called

Select one:

a. cortex.

b. capsule.

c. reticulum.

d. trabeculum.

e. basement membrane.

Question 11

2.50 points out of 2.50

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Which of the following organs does NOT contain lymphatic tissue?

Select one:

a. liver

b. spleen

c. lingual tonsils

d. thymus

e. pharyngeal tonsils.

Question 12

2.50 points out of 2.50

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Tonsils

Select one:

a. increase in size in adults.

b. are located in both the oral and abdominal cavities.

c. provide protection against bacteria entering the oral and nasal cavities.

d. contain red pulp and white pulp.

e. are not functional in children.

Question 13

2.50 points out of 2.50

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How do lymphatic capillaries differ form blood capillaries?

Select one:

a. Lymphatic capillaries do not have a basement membrane.

b. Simple squamous epithelial cells of lymphatics overlap with loose attachments.

c. Lymphatic capillaries are more permeable than blood capillaries.

d. Lymphatic capillary epithelium act as one-way valves preventing movement of fluid back into interstitial spaces.

e. All of the choices are ways lymphatic capillaries differ from blood capillaries.

Question 14

2.50 points out of 2.50

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Lymphatic tissue contains an interlaced network of reticular fibers that functions to

Select one:

a. produce lymphocytes.

b. produce capsules around lymph nodes.

c. attack microorganisms.

d. line the walls of lymphatic vessels.

e. trap microorganisms.

Question 15

2.50 points out of 2.50

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Lymph nodules are

Select one:

a. small, bean-shaped structures.

b. the site of erythrocyte production.

c. located in the loose connective tissue of the digestive system.

d. composed of an outer cortex and inner medulla.

e. connected together in a series.

Question 16

2.50 points out of 2.50

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The right lymphatic duct drains lymph from the

Select one:

a. abdomen.

b. upper part of the body.

c. right arm, right chest, and right side of head.

d. right side of the body.

e. left arm, left chest, and left side of head.

Question 17

2.50 points out of 2.50

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The lymphatic system plays a role in maintaining fluid balance within the body by

Select one:

a. adding lymph to GI tract secretions.

b. returning interstitial fluid to the plasma.

c. transporting lymph from tissues to the liver.

d. carrying excess fluid to the kidneys to be excreted.

e. actively absorbing fluid from the blood.

Question 18

2.50 points out of 2.50

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Bacteria and debris are actively removed from the lymph by _____ in the sinuses of lymph nodes.

Select one:

a. trabecular cells

b. germinal cells

c. macrophages.

d. lymphocytes

e. plasma cells

Question 19

2.50 points out of 2.50

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What is the function of thymosin?

Select one:

a. destroys damaged red blood cells

b. destroys damaged white blood cells

c. activates lymphocytes in lymph nodes

d. maturation of T-cells

Question 20

In

0.00 points out of 2.50

Question text

Bean-shaped lymphatic organs found along lymphatic vessels are called

Select one:

a. lymph nodes.

b. medullary cords.

c. cisterna chyli.

d. trabeculae.

e. lymph nodules.