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Chapter 20- Lymphatic System

front 1 1) Small organs associated with lymphatic vessels are termed ________. A) lymph follicles B) lymph nodes C) axillary nodes D) cisterna chyli	back 1 B) lymph nodes
front 2 2) Which of the following would not be classified as a lymphatic structure? A) pancreas B) spleen C) tonsils D) Peyer's patches of the intestine	back 2 A) pancreas
front 3 3) The distal portion of the small intestine contains clumps of lymph follicles called ________. A) islets of Langerhans B) Peyer's patches C) rugae D) villi	back 3 B) Peyer's patches
front 4 4) Both lymph and venous blood flow are heavily dependent on ________. A) the pumping action of the heart B) skeletal muscle contractions and differences in thoracic pressures due to respiratory movement C) contraction of the vessels themselves D) two-way valves	back 4 B) skeletal muscle contractions and differences in thoracic pressures due to respiratory movements

front 5 5) The thymus is most active during ________. A) fetal development B) childhood C) middle age D) old age	back 5 B) childhood
front 6 6) Which lymphatic structure drains lymph from the right upper limb and the right side of the head and thorax? A) lumbar trunk B) thoracic duct C) right lymphatic duct D) cisterna chyli	back 6 C) right lymphatic duct
front 7 7) What effect does age have on the size of the thymus? A) The size of the thymus increases continuously from birth to death. B) The size of the thymus decreases continuously from birth to death. C) The thymus is not affected by age. D) The thymus initially increases in size and then decreases in size from adolescence through old age.	back 7 D) The thymus initially increases in size and then decreases in size from adolescence through old age.
front 8 8) The lymphatic capillaries are ________. A) more permeable than blood capillaries B) less permeable than blood capillaries C) equally permeable to blood capillaries D) completely impermeable	back 8 A) more permeable than blood capillaries

front 9 9) Antibodies that act against a particular foreign substance are released by ________. A) T lymphocytes B) plasma cells C) lymph nodes D) medullary cords	back 9 B) plasma cells
front 10 10) Lymph leaves a lymph node via ________. A) efferent lymphatic vessels B) afferent lymphatic vessels C) the cortical sinus D) the subscapular sinus	back 10 A) efferent lymphatic vessels
front 11 11) By secreting hormones, the thymus causes what cells to become immunocompetent? A) basophils B) lymphocytes C) macrophages D) monocytes	back 11 B) lymphocytes
front 12 12) Functions of the spleen include all of those below except ________. A) removal of old or defective blood cells from the blood B) crypts that trap bacteria C) storage of blood platelets D) storage of iron	back 12 B) crypts that trap bacteria

front 13 13) When the lymphatics are blocked due to tumors, the result is ________. A) shrinkage of tissues distal to the blockage due to inadequate delivery of lymph B) severe localized edema distal to the blockage C) increased pressure in the lymphatics proximal to the blockage D) abnormally high lymph drainage from the distal region	back 13 B) severe localized edema distal to the blockage
front 14 14) Select the correct statement about lymph transport. A) Under normal conditions, lymph vessels are very high-pressure conduits. B) Lymph transport is faster than that occurring in veins. 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.	back 14 D) Lymph transport depends on the movement of adjacent tissues, such as skeletal muscles.
front 15 15) Select the correct statement about lymphocytes. A) The 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 precursors of B cells. D) T cells are the only form of lymphocyte found in lymphoid tissue.	back 15 B) B cells produce plasma cells, which secrete antibodies into the blood.
front 16 16) Select the correct statement about lymphoid tissue. A) Once a lymphocyte enters the lymphoid tissue, it resides there permanently. B) Lymphoid macrophages secrete antibodies into the blood. C) Lymphoid tissue is predominantly reticular connective tissue. D) T lymphocytes act by ingesting foreign substances.	back 16 C) Lymphoid tissue is predominantly reticular connective tissue.

front 17 17) A ring of lymphoid tissue that appears as a swelling of the mucosa in the oral cavity is called a(n) ________. A) tonsil B) thymus C) Peyer's patch D) appendix	back 17 A) tonsil
front 18 18) Which is not a mucosa-associated lymphatic tissue? A) tonsil B) thymus C) Peyer's patch D) appendix	back 18 B) thymus
front 19 19) Peyer's patches are found in the ________. A) stomach B) small intestine C) large intestine D) spleen	back 19 B) small intestine
front 20 20) Lymph collecting or pooling from the lower extremities would first pool in the ________ before moving on up. A) thoracic duct B) inguinal nodes C) cisterna chyli D) azygos	back 20 C) cisterna chyli

front 21 21) What is a bubo? A) a wall in a lymph node B) a lobe of the spleen C) an infected Peyer's patch D) an infected lymph node	back 21 D) an infected lymph node
front 22 22) What is the function of a Hassall's corpuscle? A) It increases the surface area of the thymic cortex. B) It assists in the production of lymphocytes. C) It forms the blood-thymus barrier. D) It has no known significant function.	back 22 D) It has no known significant function.
front 23 23) Particularly large clusters of lymph nodes occur in all of the following locations except the ________. A) inguinal region B) cervical region C) axillary region D) lower extremities	back 23 D) lower extremities
front 24 24) Digestive tract-associated lymphatic tissue includes all of the following except ________. A) Peyer's patches B) palatine tonsils C) lingual tonsils D) islets of Langerhans	back 24 D) islets of Langerhans

front 25 25) Functions of the lymphatic system include ________. A) transport of excess tissue fluid to the blood vascular system B) transport of red blood cells to the blood vascular system C) maintenance of blood pressure in the venous circulation D) excretion of excess dietary fat	back 25 A) transport of excess tissue fluid to the blood vascular system
front 26 26) The tonsils located at the base of the tongue are the ________. A) lingual tonsils B) palatine tonsils C) pharyngeal tonsils D) Peyer's tonsils	back 26 A) lingual tonsils
front 27 27) Which of the following is not a normal component of lymph? A) water B) plasma proteins C) red blood cells D) ions	back 27 C) red blood cells
front 28 28) A sentinel node is ________. A) a lymph node found in the intestinal lamina propria B) the first node at the junction of all the lumbar trunks C) a small node in the spleen D) the first node to receive lymph from an area suspected to be cancerous	back 28 D) the first node to receive lymph from an area suspected to be cancerous

front 29 29) Peyer's patches are clusters of lymphoid tissue found primarily in the large intestine.	back 29 FALSE
front 30 30) The lymphatics function to absorb the excess protein-containing interstitial fluid and return it to the bloodstream	back 30 TRUE
front 31 31) Lymph always flows away from the heart	back 31 FALSE
front 32 32) Lymphatic capillaries are permeable to proteins	back 32 TRUE

front 33 33) Digested fats are absorbed from the intestine by the lymph capillaries.	back 33 TRUE
front 34 34) Chyle is delivered to the blood via the lymphatic system	back 34 TRUE
front 35 35) All lymphoid organs develop from mesoderm	back 35 FALSE
front 36 36) About 3 liters of fluid are lost to the tissue spaces every 24 hours and are returned to the bloodstream as lymph	back 36 TRUE

front 37 37) Because lymph vessels are very low-pressure conduits, movements of adjacent tissues are important in propelling lymph through the lymphatics	back 37 TRUE
front 38 38) Lymphoid tissue is mainly reticular connective tissue	back 38 TRUE
front 39 39) Lymphocytes reside temporarily in lymphoid tissue, then move to other parts of the body.	back 39 TRUE
front 40 40) All the lymphoid organs are well developed before birth	back 40 FALSE

front 41 41) An infected lymph gland is called a bubo	back 41 TRUE
front 42 42) The largest lymphatic vessels are called lacteals	back 42 FALSE
front 43 43) The cisterna chyli collects lymph from the lumbar trunks draining the upper limbs and from the intestinal trunk draining the digestive organs	back 43 FALSE
front 44 44) If even a small part of the spleen is left in a ten-year-old child, it will most likely regenerate itself	back 44 TRUE

front 45 The thymus lacks T cells	back 45 FALSE
front 46 I HOPE THESE NOTE CARDS ARE USEFUL TO YOUR STUDIES. ALSO, IF THERE WERE ANY MISTAKES PLEASE SEND ME A MESSAGE & I WILL BE GLAD TO FIX IT. GOOD LUCK ON YOUR EXAM!!	back 46 I HOPE THESE NOTE CARDS ARE USEFUL TO YOUR STUDIES. ALSO, IF THERE WERE ANY MISTAKES PLEASE SEND ME A MESSAGE & I WILL BE GLAD TO FIX IT. GOOD LUCK ON YOUR EXAM!!