Lesson 6

Question 1

Which of the following describes the flow of lymph?

in one direction away from the heart

in one direction towards the heart

into the capillaries

both towards and away from the heart

into the tissues

Answer 1

in one direction towards the heart

Question 2

Which of the following describes the function of the lymph system?

controlling body temperature through sweat

production of all white cell types

production of both T and B lymphocytes only

returning fluid and proteins to the blood circulation

transporting nutrients and waste products to and from the tissue cells

Answer 2

returning fluid and proteins to the blood circulation

Question 3

What vessel receives lymph from most of the body?

cisternae chili

afferent arterioles

thoracic duct

right lymphatic duct

left lymphatic duct

Answer 3

thoracic duct

Question 4

What lymph vessel receives lymph drainage from the lower limbs?

subclavian trunk

cysterna chyli

jugular trunk

intestinal trunk

right lymphatic duct

Answer 4

cysterna chyli

Question 5

Which of the following describes lymph capillaries?

they have very tight junctions and are slightly permeable

they are equally permeable to blood capillaries

they are identical in structure to blood capillaries

they are less permeable than blood capillaries

they are more permeable than blood capillaries

Answer 5

they are more permeable than blood capillaries

Question 6

Which of the following is describes edema?

inflammation of the lymph nodes

localized accumulation of phagocytes

a localized response to bacterial invasions

the result of a ruptured spleen

excess accumulation of fluid within the tissues

Answer 6

excess accumulation of fluid within the tissues

Question 7

Which of the following substances are normally found in lymph fluid?

water, red blood cells and plasma

water, ions, red and white blood cells

water, proteins, ions and lymphocytes

plasma proteins and hormones only

the same composition as blood

Answer 7

water, proteins, ions and lymphocytes

Question 8

Which of the following describes lymph transport?

Lymph generally circulates under high pressure

Lymph travels faster in vessels than blood travels in veins

lymph travels only during episodes of illness

lymph movement is dependent on muscle contractions of adjacent muscles

lymph movement increases when cardiac output is high

Answer 8

lymph movement is dependent on muscle contractions of adjacent muscles

Question 9

Which lymphoid tissues trap and remove bacteria from the throat?

tonsils

appendix

thymus gland

cervical lymph nodes

Peyer’s patches

Answer 9

tonsils

Question 10

What lymph organ’s major function is to destroy worn out red blood cells?

lymph nodes

thymus gland

appendix

tonsils

spleen

Answer 10

spleen

Question 11

Where is the thymus gland located?

left side of the abdominal cavity just below the diaphragm

right side of the abdominal cavity just below lungs

in the thoracic cavity lying just over the heart

in the inferior portion of the small intestine

at the junction of the small intestine and the large intestine

Answer 11

in the thoracic cavity lying just over the heart

Question 12

What lymph organ programs T cells and functions at peak levels only during youth?

spleen

tonsils

appendix

thymus

Peyer’s patches

Answer 12

thymus

Question 13

Which of the following are considered Mucosa-associated lymphatic tissue?

tonsils and Peyer’s patches

tonsils only

thymus gland

spleen

tonsils and spleen

Answer 13

tonsils and Peyer’s patches

Question 14

What tonsils are located at the base of the tongue?

lingual

palatine

nasopharyngeal

pharyngeal

tympanic

Answer 14

lingual

Question 15

What type of cell differentiates in the thymus?

B lymphocytes

T lymphocytes

Plasma cells

Both B and T lymphocytes

macrophages

Answer 15

T lymphocytes

Question 16

What type of cell recognizes antigens and produces plasma cells?

macrophages

T lymphocytes

monocytes

Mast cells

B lymphocytes

Answer 16

B lymphocytes

Question 17

Which of the following describe lymphocytes?

There are three main types of lymphocytes: T cells, M cells and B cells

Lymphatic macrophages secrete antibodies when exposed to foreign antigens

Lymphocytes originate in either lymph nodes or the thymus

Lymphocytes originate in the bone marrow but further mature before they are effective against disease.

B cells are capable of directly attacking foreign microbes

Answer 17

Lymphocytes originate in the bone marrow but further mature before they are effective against disease.

Question 18

Which one of the following describes lymph nodes?

They remove foreign materials from the lymph fluid

They produce lymph fluid for circulation

They contain MALT

They are composed of white pulp

They have valves similar to those found in veins

Answer 18

They remove foreign materials from the lymph fluid

Question 19

What are the connective tissue strands that divide the lymph node into compartments?

germinal centers

trabeculae of reticular fibers

medullary cords

subcapsular sinuses

red pulp

Answer 19

trabeculae of reticular fibers

Question 20

Which of the following describes the activity in the germinal centers of the lymph node cortex?

macrophages lay in wait for foreign debris to flow by

plasma cells prepare for phagocytosis of microbes

B lymphocytes go through rapid division here

all formed elements of the blood are house there

place where T cells become immunocompetent

Answer 20

B lymphocytes go through rapid division here

Question 21

Which structure in the lymph node contains macrophages and reticular cells?

follicles

trabeculae

medullary cords

medullary sinuses

subcapsular sinuses

Answer 21

medullary sinuses

Question 22

What is the internal portion of the lymph gland where lymph cells are arranged in cordlike fashion?

medullary cords

trabeculae

splenic cords

thymic corpuscles

white pulp

Answer 22

medullary cords

Question 23

What vessel drains the lymph nodes and is fewer in number than the vessels that deliver lymph to the lymph node?

efferent lymph vessel

subscapular sinus

lymphatic hillum

afferent lymph vessel

medullary sinus

Answer 23

efferent lymph vessel

Question 24

Which of the following lists the areas in which large clusters of lymph nodes are present?

axillary, lumbar and thoracic

axilary, lumbar and cervical

axillary, inguinal and cervical

inguinal, lumbar and thoracic

cervical, jugular and lumbar

Answer 24

axillary, inguinal and cervical

Question 25

What does the presence of buboes indicate?

if painful, they can indicate cancer

a lymph node that is infected by microorganisms

an infected tonsil

an overproduction of lymph fluid

an inflamed spleen

Answer 25

a lymph node that is infected by microorganisms