Protein‐containing fluid within lymphatic vessels.
Lymph
Stores blood platelets
Spleen
Receives lymph from most of the body.
Thoracic duct
Small organs intimately associated with lymphatic vessels
Lymph node
Largest lymphatic organ
Spleen
Isolated clusters of lymph follicles found in the wall of the small intestine.
Peyer's patches
Peyer's patches are clusters of lymphoid tissue found primarily in the large intestine TF
False
The lymphatic capillaries function to absorb the excess protein‐containing interstitial fluid and return it to the bloodstream. TF
True
Lymph always flows away from the heart. TF
False
Lymphatic capillaries are permeable to proteins TF
true
Digested fats are absorbed from the intestine by the lymph capillaries TF
True
Chyle is delivered to the blood via the lymphatic system.
True
All lymphoid organs develop from mesoderm
False
About 3 liters of fluid are lost to the tissue spaces every 24 hours and are returned to the bloodstream as lymph. TF
TRUE
Because lymph vessels are very low‐pressure conduits, movements of adjacent tissues are important in propelling lymph through the lymphatics.
TRUE
Lymphoid tissue is mainly reticular connective tissue.
True
Lymphocytes reside temporarily in lymphoid tissue, then move to other parts of the body TF
True
All the lymphoid organs are well developed before birth. TF
Fasle
An infected lymph gland is called a bubo TF
True
When tissues are inflamed, lymphatic capillaries develop openings that permit uptake of large particles such as cell debris, pathogens, and cancer cells. TF
True
The cisterna chyli collects lymph from the lumbar trunks draining the upper limbs and from the intestinal trunk draining the digestive organs TF
False
If even a small part of the spleen is left in a ten‐year‐old child, it will most likely regenerate itself. TF
True
All lymphatic organs are composed of epithelial tissue.
False
The most important role of the spleen is to provide a site for lymphocyte proliferation and immune surveillance and response. TF
Fasle
The simplest lymphoid organs are the lymph nodes
False
Small organs associated with lymphatic vessels are termed
A) lymph nodes
Which of the following would not be classified as a lymphatic structure?
A) pancreas
The distal portion of the small intestine contains clumps of lymph follicles called
A) Peyer's patches
B) islets of Langerhans
C) rugae
D) villi
A) Peyer's patches
Both lymph and venous blood flow are heavily dependent on
A) skeletal muscle contractions and differences in thoracic pressures due to respiratory movement
The thymus is most active during ________. A) childhood
B) fetal development
C) middle age
D) old age
A) childhood
Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax?
C) right lymphatic duct
What effect does age have on the size of the thymus?
B) The thymus initially increases in size and then decreases in size from adolescence through old age.
The lymphatic capillaries are ________.
A) more permeable than blood capillaries
Antibodies that act against a particular foreign substance are released by
A) plasma cells
Lymph leaves a lymph node via ________.
D) efferent lymphatic vessels
Which cells become immunocompetent due to thymic hormones?
C) lymphocytes
Functions of the spleen include all of those below except
C) forming crypts that trap bacteria
When the lymphatic structures are blocked due to tumors, the result is ________.
A) increased pressure in the lymphatics proximal to the blockage
Select the correct statement about lymph transport.
D) Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles.
Select the correct statement about lymphocytes.
A) T cells are the only form of lymphocyte found in lymphoid tissue.
B) T cells are the precursors of B cells.
C) B cells produce plasma cells, which secrete antibodies into the blood.
D) The two main types are T cells and macrophages
C) B cells produce plasma cells, which secrete antibodies into the blood.
Select the correct statement about lymphoid tissue.
A) Lymphoid macrophages secrete antibodies into the blood.
B) T lymphocytes act by ingesting foreign substances.
C) Lymphoid tissue is predominantly reticular connective tissue.
D) Once a lymphocyte enters the lymphoid tissue, it resides there permanently.
C) Lymphoid tissue is predominantly reticular connective tissue.
Lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n)
C) tonsil
Which of the following is not a mucosa‐associated lymphatic tissue?
C) thymus
Peyer's patches are found in the ________.
A) ileum of the small intestine
Lymph capillaries are absent in all but which of the following?
A) digestive organs
What is a bubo?
B) an infected lymph node
The thymus is the only lymphoid organ that does not
C) directly fight antigens
Large clusters of lymph nodes occur in all of the following locations except the ________.
B) lower extremities
Digestive tract‐associated lymphatic tissue includes all of the following except
D) islets of Langerhans
\Which of the following is not a method that maintains lymph flow?
A) smooth muscle contraction
The tonsils located at the base of the tongue are the
B) lingual tonsils
Which of the following is not a normal component of lymph?
A) plasma proteins
B) ions
C) water
D) red blood cells
D) red blood cells
A sentinel node is ________.
D) the first node to receive lymph from an area suspected to be cancerous
Which of the following are functions of lymphoid tissue?
A) A and C
Which of the following is not a function of the lymphatic system?
A) transporting respiratory gases
Which of the following is not a function of lymph nodes?
A) produce lymph fluid and cerebro‐spinal fluid
The ________ are the simplest lymphoid organs and are found at the entrance to the pharynx
Tonsils
The appendix, tonsils, and Peyer's patches are examples of ________.
Malt
Highly specialized lymph capillaries called ________ are present in the villi of the intestinal mucosa.
Lacteals
The thoracic duct of the lymphatic system empties into the
Left subclavian vein
Tonsils have blind‐ended structures called ________.
Crypts
Hassall's corpuscles are always found in the lighter‐colored ________ regions of the thymus.
Medullary
The ________ pulp of the spleen forms cuffs around the central arteries.
white
Lymphatic ________ are formed from the union of the largest collecting vessels.