BIOL G220 Unit 4 Lecture Exam Review D Question Preview (ID: 33825)


Lecture Day 23 Material: Lymphatic. TEACHERS: click here for quick copy question ID numbers.

one of the main functions of the lymphatic system is to
a) return interstitial fluid to the circulatory system
b) store excess fluid until it can be processed by the kidneys
c) maintain osmotic balance in the blood by sequestering salts
d) allow for development of red blood cells

the other main function of the lymphatic system is
a) to provide immunity
b) to maintain hematocrit
c) to balance the output of red bone marrow
d) to convey wastes from the body to the kidneys

the lymphatic system also has digestive aspect, transporting large molecules, especially_____, from the GI tract to the bloodstream
a) lipids
b) carbohydrates
c) proteins
d) nucleic acids

lymph is a fluid that accumulates________ in addition to fluid from the tissues and lipids from the digestive system
a) foreign cells and viruses that are potential pathogens, plus cancer cells
b) crystals of uric acid that would otherwise accumulate in the kidney as stones
c) crystals of bilirubin that would otherwise accumulate in the gall bladder as stones
d) calcium/ calmodulin complexed generated by bone regeneration

unlike veins and arteries, lymph vessels have ______, because they _______
a) terminal ends, flow one way instead of circulating
b) apical stem cells, can regenerate themselves
c) circumfrential sphincters, need to shut down the flow totally sometimes.
d) 4 layers, because they intake fluid in bulk

the endothelial cells in the outer layer of lymph capillaries allows interstitial fluid in but not out with cells that
a) overlap
b) have multiple pores in them
c) lack tight junctions
d) expand as they absorb fluid

lymphatic capillaries feed into lymphatic _____, then lymphatic trunks, and finally into lymphatic ____ to re-enter the bloodstream at the subclavian arteries
a) vessels, ducts
b) vassals, ducks
c) lyphioles, veins
d) tubules, junctions

like veins, lymph vessels have 3 _____ and contain _____
a) tunics, valves
b) types, fluid under pressure
c) isoforms, anastomoses
d) tunics, circumfrential sphincters

in the villi of of the small intestine are special lymph vessels called
a) lacteals
b) vilivessels
c) chylesomes
d) nodules

_________ lymph vessels transport lymph toward lymph nodes, and ______ lymph vessels transport lymph away from lymph nodes
a) afferent, efferent
b) affluent, effluent
c) interlymph, extralymph
d) venous, arterial

the lymphatic system has a few tissue-level structures of note: these are distinct from the lymphatic organs as they lack a
a) capsule
b) blood supply
c) sufficient variety of cells
d) any real purpose

the fundamental sub-organ lymph tissue is organized into clusters of cells called
a) lymph nodules
b) lymph laminae
c) lymph plexus
d) lymph ganglia

M.A.L.T. stands for
a) Mucus Associated Lymphatic Tissue
b) Multiply Aggregated Lymphatic Tissue
c) Minutely Aberrant Lymphatic Tissue
d) Massively Acclimated Lymphatic Tissue

the third special 'tissue' structure in the Lymphatic system, which is found in the pharynx and has a partial capsule are the
a) tonsils
b) thyroids
c) thymus
d) thalamus

of the three encapsulated organs of the lymphatic system, one of them serves as the site for maturation of a specific class of lymphocytes; it is the
a) thymus
b) thalamus
c) thyroids
d) trabeculus

the most prevalent organs of the lymphatic system are the encapsulated _______ ____, where lymph is screened by collections of lymphocytes
a) lymph nodes
b) lymph nodules
c) lymph nacensces
d) lymph nuisances

the organ that screens blood for antigens using groups of lymphocytes is the _____
a) spleen
b) kidney
c) liver
d) pancreas

________ t-lymphocytes activate immune response by presenting antigens and secreting cytokines, while ______ T lymphocytes kill cells or induce apoptosis
a) Helper, Cytotoxic
b) Activator, Inhibitor
c) Agranulocytic, Granulocytic
d) Primary, Secondary

B- lymphocytes respond to cytokines by dividing into plasma cells that release ______, while some remain in the circulation for years, earning them the name '________ ______'
a) antibodies, memory cells
b) neurotransmitters, latent cells
c) acetylcholinesterase, resident cells
d) antigens, transient cells

monocytes can transform into ___________, literally '_____________', which consume foreign cells whole
a) macrophages, 'big eaters'
b) cytokinetopores, 'cell moving holes'
c) polygastrosomes, 'many stomach bodies'
d) apoptotogens, 'cell-death causative agents'

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