Biology Questions and Answers

(Greg DeLong) #1

Biology Questions and Answers


of varix patients. These apparent
vessels are the consequences of internalvarices (venous insufficiency) in the
deep internal veins of the legs and they


appear because tdiverted to superficial veins. (Pophe blood flux is (^) ularly
however apparent superficial veins are
called varices.)



  1. What is the lymphatic
    system?


The lymphaticspecialized valv systemed vessels that drain is a network of
interstitial fluid (lymph). The lymphatic


system istransport of chylomicrons (v also responsible for theesicles (^) that
contain lipids) made after the
absorption epithelium.of fats by the intestinal
In the way of the lymphaticthere are ganglial-like structures called vessels (^)
lymph nodes that contain mathe immune system. These cells filterny cells of
impurities and destroy microorganisms
and cellular wastes.vessels drain to two major The lymplymphatichatic (^)
vessels, the thoracic duct and the right
lymphatic duct, that in tinto tributary veins of the superior vheir turns draienan (^)
cava.



  1. Why in inflammatory and
    infectious conditions may
    clinical signs related to the
    lymphatic system occur?


The lymph have lymphoid tissue that prnodes, or lymph glands,oduces (^)
lymphocytes (a typinflammatory and infectiouse of leukocyte). I conditionsn (^)
the enlargement of lymph nodes of the
lymphatic circuitsregion due to the reactive that drain the affected proliferation
of leukocytes is common. This
enlargement is known aslymphadenomegaly and sometimes it is (^)
accompanied by pain. The search for
enlarged or painful lympof the medical examination h nodes is partsince these
findings may suggest inflammation,
infection or other diseases.



  1. Which are the heart
    chambers respectively where
    the entrance and the exit of
    blood occur?
    The heart chambers through which


blood enters the heart are There are the right atrium anthe atria.d the left (^)
atrium.
The heart chambblood exits the heart are the ventricles.ers through which the (^)
There are the right ventricle and the leftventricle.



  1. Concerning the thickness
    of their walls how different
    are the heart chambers?
    The ventricle walls aratrium walls since ventricles aree thicker tha n the


structures rof the blood to the lungs or esponsible for the pumpingtissues. The (^)
muscular work of the ventricles is
harder and their muscle fmore. ibers develop
The left ventricle is morthe right ventricle because pumpinge muscular than
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