BSCv2086 Lymphatic System Exam Questions and Answers Already Passed Latest Update
2025-2026
Functions of the lymphatic system - Answers -fluid recovery
-immunity
-lipid absorption
lymph - Answers the recovery fluid picked up by lymphatic vessels from the blood capillaries
chyle - Answers lymph containing high lipid content because of lipids draining from lacteals in
small intestines after a meal
lymphatic vessels - Answers transport the lymph
lymphatic tissues - Answers composed of aggregates of lymphocytes and macrophages that
populate many organs of the body
what is the route of lymph back to the bloodstream? - Answers -lymphatic capillaries
-collecting vessels
-lymphatic trunks
-collecting ducts
-subclavian veins
lymphatic capillaries - Answers -closed at one end
-composed of thin endothelial cells which create valvelike flaps that open when interstitial fluid
pressure is high, and close when it is low
how many layers do lymphatic vessels have? - Answers three
what are the three layers of lymphatic vessels - Answers -tunica interna (composed of
endothelium and valves)
-tunica media (composed of elastic fibers and smooth muscle)
-tunica externa (thin outer layer)
collecting vessels of lymphatic system - Answers -often travel alongside arteries and veins
-pass through many lymph nodes
how many lymphatic trunks are located in the body? - Answers six
, what do the lymphatic trunks do? - Answers drain the major portions of the body
jugular trunk - Answers drains the head and neck
subclavian trunk - Answers drains upper limbs, superficial thoracic wall, and mammary glands
bronchomediastinal trunk - Answers drains thoracic organs and deep thoracic wall
intercostal trunk - Answers drains posterior thoracic wall
intestinal trunk - Answers drains intestines, stomach, pancreas, spleen, and liver
lumbar trunk - Answers drains lower limbs, pelvic and abdominal walls, pelvic organs, kidneys,
and adrenal glands
what are the two collecting ducts of the lymphatic system? - Answers -the right lymphatic duct
-the thoracic duct
which of the collecting ducts is larger and longer? - Answers the thoracic duct
right lymphatic duct - Answers -empties into the right subclavian vein
-convergence of right jugular, right subclavian, and right bronchomediastinal trunks
thoracic duct - Answers -larger and longer of the two collecting ducts
-begins just below the diaphragm where the lumbar trunks and intestinal trunk join to form the
cisterna chyli
-receives lymph from intercostal, bronchomediastinal, and jugular trunks
-empties into left subclavian vein
lacteals - Answers absorbs lipids from the small intestines because lipids cannot be absorbed
directly into the bloodstream
where are lacteals located? - Answers in the villi of the intestinal wall
understand how lymph flows through the body - Answers *look in notes, highlighted*
Natural Killer (NK) cells - Answers -large lymphocytes that attack and destroy bacteria,
transplanted tissue, and host cells infected with viruses or have turned cancerous
-responsible for immune surveillance
where do T lymphocytes mature? - Answers in the thymus
where do B lymphocytes mature? - Answers -in the bone marrow
2025-2026
Functions of the lymphatic system - Answers -fluid recovery
-immunity
-lipid absorption
lymph - Answers the recovery fluid picked up by lymphatic vessels from the blood capillaries
chyle - Answers lymph containing high lipid content because of lipids draining from lacteals in
small intestines after a meal
lymphatic vessels - Answers transport the lymph
lymphatic tissues - Answers composed of aggregates of lymphocytes and macrophages that
populate many organs of the body
what is the route of lymph back to the bloodstream? - Answers -lymphatic capillaries
-collecting vessels
-lymphatic trunks
-collecting ducts
-subclavian veins
lymphatic capillaries - Answers -closed at one end
-composed of thin endothelial cells which create valvelike flaps that open when interstitial fluid
pressure is high, and close when it is low
how many layers do lymphatic vessels have? - Answers three
what are the three layers of lymphatic vessels - Answers -tunica interna (composed of
endothelium and valves)
-tunica media (composed of elastic fibers and smooth muscle)
-tunica externa (thin outer layer)
collecting vessels of lymphatic system - Answers -often travel alongside arteries and veins
-pass through many lymph nodes
how many lymphatic trunks are located in the body? - Answers six
, what do the lymphatic trunks do? - Answers drain the major portions of the body
jugular trunk - Answers drains the head and neck
subclavian trunk - Answers drains upper limbs, superficial thoracic wall, and mammary glands
bronchomediastinal trunk - Answers drains thoracic organs and deep thoracic wall
intercostal trunk - Answers drains posterior thoracic wall
intestinal trunk - Answers drains intestines, stomach, pancreas, spleen, and liver
lumbar trunk - Answers drains lower limbs, pelvic and abdominal walls, pelvic organs, kidneys,
and adrenal glands
what are the two collecting ducts of the lymphatic system? - Answers -the right lymphatic duct
-the thoracic duct
which of the collecting ducts is larger and longer? - Answers the thoracic duct
right lymphatic duct - Answers -empties into the right subclavian vein
-convergence of right jugular, right subclavian, and right bronchomediastinal trunks
thoracic duct - Answers -larger and longer of the two collecting ducts
-begins just below the diaphragm where the lumbar trunks and intestinal trunk join to form the
cisterna chyli
-receives lymph from intercostal, bronchomediastinal, and jugular trunks
-empties into left subclavian vein
lacteals - Answers absorbs lipids from the small intestines because lipids cannot be absorbed
directly into the bloodstream
where are lacteals located? - Answers in the villi of the intestinal wall
understand how lymph flows through the body - Answers *look in notes, highlighted*
Natural Killer (NK) cells - Answers -large lymphocytes that attack and destroy bacteria,
transplanted tissue, and host cells infected with viruses or have turned cancerous
-responsible for immune surveillance
where do T lymphocytes mature? - Answers in the thymus
where do B lymphocytes mature? - Answers -in the bone marrow
