Ch 20 Lymphatic

Lymph leaves a lymph node via ___.

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

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

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

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

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

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

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

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

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

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

The thymus is the only lymphoid organ that does NOT:

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

Which cells become immunocompetent due to thymic hormones?

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

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

A) water
B) red blood cells
C) ions
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) right lymphatic duct
C) thoracic duct
D) cisterns chyli

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

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

Select the correct statement about lymphocytes.

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

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

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

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

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

A sentinel node is _____.

A) small node in the spleen
B) a lymph node found in the intestinal lamina propria
C) the first node at the junction of all the lumbar trunks
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) villi
C) islets of Langerhans
D) rugae

Peyer's patches are found in the _____.

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

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

A) pancreas
B) spleen
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) shrinkage of tissues distal to the blockage due to inadequate delivery of lymph
C) abnormally high lymph drainage from the distal region
D) severe localized edema distal to the blockage

The lymphatic capillaries are _____.

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

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

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

Select the correct statement about lymph transport.

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

What is a bubo?

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

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) furnish an ideal surveillance vantage point for lymphocytes and macrophages
D) A and C

The thymus is most active during ______.

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

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

Small organs associated with lymphatic vessels are termed ____.

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

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

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

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

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

What effect does age have on size of the thymus?

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