BIOL 215 PRACTICE PAPER 2026 FULL
QUESTIONS AND ANSWERS GRADED A+
◉antigen presenting cells (APCs). Answer: dendritic cells and
macrophages; presents antigen to helper T cells
◉fine collagen fibers produced by reticular cells; acts as filter to trap
microorganisms and other particles. Answer: Reticular fibers
◉located in lymph nodes, spleen, and thymus. Answer: encapsulated
reticualr fibers
◉mucosa-associated lymphoid tissue(MALT) found beneath
epithelium as first line of attack against invaders. Answer:
nonencapsulated reticular fibers
◉dispersed lymphocytes macrophages; associated with other
tissues. Answer: diffuse lymphatic tissue
◉denser aggregations that capture antigens; numerous in loose CT
of digestive , respiratory, urinary, and reproductive. Answer:
lymphatic nodules
,◉name of lymphatic nodules when found in lymph nodes or spleen.
Answer: lymphatic follicles
◉lymphatic nodules in digestive system; gut associated lymphoid
tissue (GALT; trap antigens from invading pathogens. Answer:
peyers patches
◉prominent in distal small intestine. Answer: peyers patches
locations
◉Large groups of lymphatic nodules in nasopharynx and oral cavity,
Provide protection against bacteria and other harmful material;
form ring around borer of oral cavity and pharynx. Answer: tonsils
(lymphatic nodules)
◉palatine(tonsils), pharyngeal(adenoids), lingual. Answer: 3 groups
of tonsils
◉superficial and depp; organized into cortex and medulla with
dense CT capsule surrounding; afferent and efferent vessels.
Answer: lymph node structure
◉extend within lymph nodes. Answer: trabeculae
, ◉form supporting network. Answer: reticular fibers in lymph nodes
◉act as channels. Answer: lymphatic sinuses in lymph nodes
◉only structures that filter lymph; substances removed by
phagocytosis or stimulate lymphocytes to proliferate in germinal
centers. Answer: lymph node function
◉often migrate to lymph nodes, are trapped there, and proliferate;
spreads from lymph system to circulatory before spreading through
the body. Answer: cancer cells
◉located in left superior side of abdomen. Answer: spleen location
◉contain lymphocytes and macrophages; splenic cord. Answer:
spleen
◉associated with arteries. Answer: white pulp of spleen
◉associated with veins. Answer: red pulp with veins
◉reticular cells producing reticular fibers. Answer: splenic cord
QUESTIONS AND ANSWERS GRADED A+
◉antigen presenting cells (APCs). Answer: dendritic cells and
macrophages; presents antigen to helper T cells
◉fine collagen fibers produced by reticular cells; acts as filter to trap
microorganisms and other particles. Answer: Reticular fibers
◉located in lymph nodes, spleen, and thymus. Answer: encapsulated
reticualr fibers
◉mucosa-associated lymphoid tissue(MALT) found beneath
epithelium as first line of attack against invaders. Answer:
nonencapsulated reticular fibers
◉dispersed lymphocytes macrophages; associated with other
tissues. Answer: diffuse lymphatic tissue
◉denser aggregations that capture antigens; numerous in loose CT
of digestive , respiratory, urinary, and reproductive. Answer:
lymphatic nodules
,◉name of lymphatic nodules when found in lymph nodes or spleen.
Answer: lymphatic follicles
◉lymphatic nodules in digestive system; gut associated lymphoid
tissue (GALT; trap antigens from invading pathogens. Answer:
peyers patches
◉prominent in distal small intestine. Answer: peyers patches
locations
◉Large groups of lymphatic nodules in nasopharynx and oral cavity,
Provide protection against bacteria and other harmful material;
form ring around borer of oral cavity and pharynx. Answer: tonsils
(lymphatic nodules)
◉palatine(tonsils), pharyngeal(adenoids), lingual. Answer: 3 groups
of tonsils
◉superficial and depp; organized into cortex and medulla with
dense CT capsule surrounding; afferent and efferent vessels.
Answer: lymph node structure
◉extend within lymph nodes. Answer: trabeculae
, ◉form supporting network. Answer: reticular fibers in lymph nodes
◉act as channels. Answer: lymphatic sinuses in lymph nodes
◉only structures that filter lymph; substances removed by
phagocytosis or stimulate lymphocytes to proliferate in germinal
centers. Answer: lymph node function
◉often migrate to lymph nodes, are trapped there, and proliferate;
spreads from lymph system to circulatory before spreading through
the body. Answer: cancer cells
◉located in left superior side of abdomen. Answer: spleen location
◉contain lymphocytes and macrophages; splenic cord. Answer:
spleen
◉associated with arteries. Answer: white pulp of spleen
◉associated with veins. Answer: red pulp with veins
◉reticular cells producing reticular fibers. Answer: splenic cord
