Deck 20: The Lymphatic System and Lymphoid Organs and Tissues

Question 1

Antibodies that act against a particular foreign substance are released by .

A) T lymphocytes
B) lymph nodes
C) medullary cords
D) plasma cells

Answer 1

D

Question 2

Which of the following are functions of lymphoid tissue?

A) house and provide a proliferation site for lymphocytes
B) house and provide a proliferation site for neutrophils
C) furnish an ideal surveillance vantage point for lymphocytes and macrophages
D) A and C

Answer 2

D

Question 3

Digestive tract- associated lymphatic tissue includes all of the following except .

A) islets of Langerhans
B) Peyer's patches
C) lingual tonsils
D) palatine tonsils

Answer 3

A

Question 4

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

A) transporting respiratory gases
B) carrying out immune responses
C) draining excess interstitial fluid
D) transporting dietary fats

Question 5

Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) .

A) Peyer's patch
B) tonsil
C) thymus
D) appendix

Question 6

The lymphatic capillaries are .

A) more permeable than blood capillaries
B) as permeable as blood capillaries
C) less permeable than blood capillaries
D) completely impermeable

Question 7

Lymph transport involves all but which of the following?

A) lymph capillary minivalve action
B) milking action of active muscle fibers
C) smooth muscle contraction in the lymph capillary walls
D) thorax pressure changes during breathing

Question 8

Which of the following is not a function of lymph nodes?

A) produce lymphoid cells and house granular WBCs
B) serve as antigen surveillance areas
C) produce lymph fluid and cerebrospinal fluid
D) act as lymph filters and activate the immune system

Question 9

Select the correct statement about lymphoid tissue.

A) Lymphoid tissue is predominantly reticular connective tissue.
B) T lymphocytes act by ingesting foreign substances.
C) Once a lymphocyte enters the lymphoid tissue, it resides there permanently.
D) Lymphoid macrophages secrete antibodies into the blood.

Question 10

Which cells become immunocompetent due to thymic hormones?

A) macrophages
B) basophils
C) lymphocytes
D) monocytes

Question 11

The tonsils located at the base of the tongue are the .

A) Peyer's tonsils
B) palatine tonsils
C) lingual tonsils
D) pharyngeal tonsils

Question 12

Which of the following would not be classified as a lymphatic structure?

A) pancreas
B) tonsils
C) Peyer's patches of the intestine
D) spleen

Question 13

When the lymphatic structures of a limb are blocked due to tumors, the result is .

A) shrinkage of tissues distal in the limb to the blockage due to inadequate delivery of lymph
B) severe localized edema distal to the blockage of that limb
C) abnormally high lymph drainage from the distal region
D) increased pressure in the lymphatics proximal in the limb to the blockage

Question 14

Lymph leaves a lymph node via .

A) the subcapsular sinus
B) afferent lymphatic vessels
C) the cortical sinus
D) efferent lymphatic vessels

Question 15

Select the correct statement about lymphocytes.

A) The two main types are T cells and macrophages.
B) T cells are the precursors of B cells.
C) B cells produce plasma cells, which secrete antibodies into the blood.
D) T cells are the only form of lymphocyte found in lymphoid tissue.

Question 16

Which of the following is not a method that maintains lymph flow?

A) capillary smooth muscle contraction
B) valves in lymph vessel walls
C) skeletal muscle contraction
D) breathing

Question 17

Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax?

A) right lymphatic duct
B) lumbar trunk
C) cisterna chyli
D) thoracic duct

Question 18

What is a bubo?

A) an infected Peyer's patch
B) a wall in a lymph node
C) an infected lymph node
D) a lobe of the spleen

Question 19

Which of the following does not contain a mucosa- associated lymphatic tissue?

A) appendix
B) tonsil
C) Peyer's patch
D) thymus

Question 20

Lymph capillaries are absent in all except which of the following?

A) digestive organs
B) CNS
C) bones and teeth
D) bone marrow

Question 21

Peyer's patches are found in the .

A) large intestine
B) jejunum of the small intestine
C) duodenum of the small intestine
D) ileum of the small intestine

Question 22

Select the correct statement about lymph transport.

A) Lymph transport is faster than that occurring in veins.
B) Under normal conditions, lymph vessels are very high- pressure conduits.
C) Lymph transport is only necessary when illness causes tissue swelling.
D) Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles.

Question 23

Large clusters of lymph nodes occur in all of the following locations except the .

A) cervical region
B) lower extremities
C) inguinal region
D) axillary region

Question 24

Small organs associated with lymphatic vessels are termed .

A) lymph follicles
B) lymphatics
C) lymph nodes
D) lacteals

Question 25

The thymus is most active during _ .

A) middle age
B) old age
C) childhood
D) fetal development

Question 26

How does the structure of a lymph node allow lymphocytes and macrophages to perform their protective function?

Question 27

A sentinel node is .

A) a small node in the spleen
B) the first node to receive lymph from an area suspected to be cancerous
C) the first node at the junction of all the lumbar trunks
D) a lymph node found in the intestinal lamina propria

Question 28

Figure 20.1Using Figure 20.1, match the following:
What is the consequence of obstruction of the lymphatics?

Question 29

Figure 20.2Using Figure 20.2, match the following:
Name the tonsils and state their body locations.

Question 30

Figure 20.1Using Figure 20.1, match the following:
Entrance of thoracic duct into subclavian vein.

Question 31

Which of the following is not a part of the lymphatic system?

A) lymph nodes
B) erythrocytes
C) lymph
D) lymphatic vessels

Question 32

Functions of the spleen include all of those below except .

A) removal of old or defective blood cells from the blood
B) storage of iron
C) forming crypts that trap bacteria
D) storage of blood platelets

Question 33

Figure 20.1Using Figure 20.1, match the following:
Axillary node(s).

Question 34

Where are the lymph node aggregations most dense?

Question 35

Describe the mechanisms by which lymphatic fluid is moved through the lymphatics.

Question 36

Which of the following is not a normal component of lymph?

A) plasma proteins
B) ions
C) red blood cells
D) water

Question 37

The thymus is the only lymphoid organ that does not .

A) directly fight antigens
B) have a cortex and medulla
C) have lymphocytes
D) produce hormones

Question 38

Figure 20.2Using Figure 20.2, match the following:
Trabecula.

Question 39

What is the special role of the thymus gland?

Question 40

Which of the following statements regarding the thymus is not true?

A) Its stroma consists of epithelial tissue.
B) It does not fight antigens.
C) It functions strictly in T lymphocyte maturation.
D) It has follicles similar to those in the spleen.

Question 41

Figure 20.1Using Figure 20.1, match the following:
How is the skeletal system tied to the lymphatic system?

Question 42

Figure 20.2Using Figure 20.2, match the following:
The pulp of the spleen forms cuffs around the central arteries.

Question 43

How do the lymphatic capillaries differ from blood capillaries?

Question 44

List the functions of the spleen.

Question 45

Figure 20.2Using Figure 20.2, match the following:
Cortex.

Question 46

Lymphatic are formed from the union of the largest collecting vessels.

Question 47

Explain the term MALT. What is its function?

Question 48

Figure 20.2Using Figure 20.2, match the following:
Medullary cord.

Question 49

Splenic pulp is primarily concerned with immune functions of the spleen.

Question 50

The appendix, tonsils, and Peyer's patches are examples of .

Question 51

Figure 20.1Using Figure 20.1, match the following:
The are the simplest lymphoid organs and are found at the entrance to the pharynx.

Question 52

Figure 20.2Using Figure 20.2, match the following:
Tonsils have blind- ended structures called .

Question 53

Figure 20.1Using Figure 20.1, match the following:
Thoracic duct.

Question 54

Highly specialized lymph capillaries called _ are present in the villi of the intestinal mucosa.

Question 55

Figure 20.1Using Figure 20.1, match the following:
How does the lymphatic system both help and hinder the spread of cancer through the body?

Question 56

Describe the structural and functional relationship of the vessels of the vascular system and the lymphatic system.

Question 57

Figure 20.2Using Figure 20.2, match the following:
Efferent vessels.

Question 58

Thymic corpuscles are always found in the lighter- colored regions of the thymus.

Question 59

Figure 20.2Using Figure 20.2, match the following:
Characterize lymph transport in terms of rate, volume, and ability to change.

Question 60

Figure 20.2Using Figure 20.2, match the following:
Medulla.

Question 61

Figure 20.1Using Figure 20.1, match the following:
Lymphatic collecting vessels.

Question 62

Chyle is delivered to the blood via the lymphatic system.

Question 63

Figure 20.1Using Figure 20.1, match the following:
Cisterna chyli.

Question 64

When tissues are inflamed, lymphatic capillaries develop openings that permit uptake of large particles such as cell debris, pathogens, and cancer cells.

Question 65

Lymphatic capillaries are permeable to proteins.

Question 66

In the spleen, red pulp is involved in the immune functions and white pulp is involved in disposing of worn- out RBCs.

Question 67

There are more efferent lymphatic vessels leaving a lymph node than there are afferent vessels entering a lymph node.

Question 68

Peyer's patches are clusters of lymphoid tissue found primarily in the large intestine.

Question 69

About 3 liters of fluid are lost to the tissue spaces every 24 hours and are returned to the bloodstream as lymph.

Question 70

All the lymphoid organs are well developed before birth.

Question 71

Lymphocytes reside temporarily in lymphoid tissue, then move to other parts of the body.

Question 72

Lymph capillary permeability is due to minivalves and protein filaments.

Question 73

Because lymph vessels are very low- pressure conduits, movements of adjacent tissues are important in propelling lymph through the lymphatics.

Question 74

The lymphatic capillaries function to absorb the excess protein- containing interstitial fluid and return it to the bloodstream.

Question 75

Like blood, lymph flows both to and from the heart.

Question 76

The cisterna chyli collects lymph from the lumbar trunks draining the upper limbs and from the intestinal trunk draining the digestive organs.

Question 77

Lymphoid tissue is mainly reticular connective tissue.

Question 78

The simplest lymphoid organs are the lymph nodes.

Question 79

If even a small part of the spleen is left in a ten- year- old child, it will most likely regenerate itself.

Question 80

The most important role of the spleen is to provide a site for lymphocyte proliferation and immune surveillance and response.