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why in inflammatory and infectious conditions may clinical signs related to the lymphatic system occurthe lymph nodes or lymph glands have lymphoid
what is the lymphatic systemthe lymphatic system is a network of specialized valved vessels that drain interstitial fluid lymph the lymphatic system
what are varices why are they more common in the inferior limbs varix means abnormal enlargement of veins varices happen when excessive pressure
what are the valves of the venous system what is their functionthe valves of the venous system are structures within the veins that permit blood to
are the arteries or the veins constituted of more muscle tissue how dissimilar are the walls of these two types of blood vesselsthe arterial system
what are the capillaries of the vascular systemcapillaries are small blood vessels that perform exchange of substances among the blood and the body
what are venous vessels veins and venulesvenous vessels are each blood vessel that carries blood from the tissues to the heart veins and venules are
what are arterial vessels arteries and arteriolesarterial vessels are each blood vessel that carries blood from the heart to the tissues arteries and
what is the difference among systole and diastolesystole and diastole are the two stages into which the cardiac cycle is separated systole is the
how does the heart impel the bloodthe heart is a muscular organ that having chambers right atrium and right ventricle and left atrium and right
what are the typical components of a closed circulatory systemthe typical components of the closed circulatory system are the blood vessels within
why even though they have an open circulatory system can flying insects like flies beat their wings with great speedin insects the circulatory system
what is the difference between octopuses and mussels regarding their circulatory systems how does that difference influence the mobility of these
what are the advantages of the closed circulatory system over the open circulatory systemthe closed circulatory system is more efficient as blood
what is an open circulatory systemopen circulatory system is the one in which blood does not circulate only in blood vessels but it also falls in
what is the alternative means for transport of substances in animals without a circulatory system why is blood significant for larger animalsin
what is circulationcirculation is the movement of substances as nutrients and gases within blood vessels and cavities all by the
what is meant by mutualist exploration of cellulose digestion a phenomenon that occurs in some mammals and insectsherbivorous animals eat great
where is it produced and what is the function of enterogastrone in the digestive processwhen the chyme is too fatty there is a secretion of
how is it produced and what is the function of cholecystokin in the digestive processthe fat level of the chyme detect in the duodenum stimulates the
what are the main functions of the bacterial flora within the human gutbacteria that live inside the gut have great significance in digestion some
why does the ingestion of vegetable fibers improve the bowel habit in people that suffer from hard stoolssome types of plant fibers are not absorbed
what are the so-called good and bad cholesterollipoproteins are complexes made of lipids triglycerides and cholesterol and proteins the lipoproteins
why do protease-supplying cells of the stomach and of the pancreas make only precursors of the active proteolytic enzymesthe stomach and the pancreas
what are the five human digestive secretions which of them is the only one that does not contain digestive enzymesthe human digestive secretions such