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Q. What is the difference between simple closed circulation and double closed circulation?
Double closed circulation or Closed circulation is that in which the blood circulates through two associated and parallel vascular systems one that carries blood to and takes blood from the peripheral tissues that the systemic circulation and the other that carries blood to and takes blood from the tissues that perform gas exchange with the environment, for example, the lungs that is pulmonary circulation. Double circulation occurs in reptiles, amphibians, mammals and birds. Simple closed circulation or simple circulation is the one in which the tissues that perform gas exchange are associated in series with the systemic circulation as in fishes.
Which of the following serves as a controlled variable in a negative feedback system? A. Levels of hydrogen ions in the interstitial spaces of the brainstem. B. Blood plasma
Stabilized forms of natural colourants The mimicking of the native environment in which a natural colour exists is just one way of producing a stabilized form. In this case, th
Q. From which features do osteichthyes and condrichthyes get these names? "Chondros" means cartilage, "ictis" means fish (both from the Greek) the name chondrichtians is for fi
Q. What are the epithelial tissues? What is their general function and how is that function associated to the features of the tissue? Epithelial tissues also called as epitheli
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Carrageenan Carrageenan is a collective term for polysaccharides prepared by alkaline extraction (and modification) from red seaweed (Rhodophycae). Carrageenan is a sulfated ga
Nursing Assessment These children present with excessive salivation and droofing of saliva from the mouth, coughing, gagging, even choking and cyanosis at the lime of first f
Which of the below is a term for mononuclear, granulocytic white blood cells which produce immunoglobulins? a) Platelets b) Lymphocytes c) Erythrocytes (pron: eh-rith-reh
After stinging its victim, the honeybee leaves behind the barbed stinger, poison sac, and muscles that continue to pump venom into the wound. A study compared two methods of removi
Define effect of Protein excess during pregnancy period? It is not advisable to recommend protein supplements. Reports in the literature indicate that high-protein supplements
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