Ch 20 Lymphatic

Lymph leaves a lymph node via ___.

A) cortical sinus
B) affterent lymphatic vessels
C) efferent lymphatic vessels
D) subscapular sinus

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

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

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

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

Select the correct statement about lymphoid tissue.

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

Which of the following is NOT a mucosa associated lymphatic tissue?

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

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

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

Functions of the spleen include all of those below EXCEPT _____.

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

The thymus is the only lymphoid organ that does NOT:

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

Which cells become immunocompetent due to thymic hormones?

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

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

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

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

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

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

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

Select the correct statement about lymphocytes.

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

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

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

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

A) produce lymphoid cells and granular WBCs
B) act as lymph filters and activate immune system
C) serve as antigen surveillance areas
D) produce lymph fluid and cerebro-spinal fluid

A sentinel node is _____.

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

The distal portion of the small intestine contains clumps of lymph follicles called ______.

A) Peyer's patches
B) rugae
C) villi
D) islets of Langerhans

Peyer's patches are found in the _____.

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

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

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

When lymphatic structures are blocked due to tumors the result is _____.

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

The lymphatic capillaries are _____.

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

Both lymph and venous blood flow are heavily dependent on _____.

A) two way valves
B) pumping action of the heart
C) contraction of the vessels themselves
D) skeletal muscle contractions

Select the correct statement about lymph transport.

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

What is a bubo?

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

Which of the following are function of lymphoid tissue?

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

The thymus is most active during ______.

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

What effect does age have on the size of the thymus?

A) the size of the thymus decreases continuously from birth to death
B) the thymus is not affected by age
C) the size of the thymus increases continuously from birth to death
D) the thymus initially increases in size and then decreases in size from adolescence through old age

Small organs associated with lymphatic vessels are termed ____.

A) cisterna chyli
B) lymph nodes
C) lymph follicles
D) axillary nodes

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

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

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

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

What effect does age have on size of the thymus?

A) increases continuously from birth to death
B) initially increases and then decreases in size from adolescence through old age
C) no effect
D) decreased continuously from birth to death