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In the ABO system of blood groups, if both antigens are present but no antibody, the blood group of the individual would be
Blood group AB is also known as the universal recipient.
The amount of water present in blood plasma is
Which of the following statments is true for lymph?
Lymph is colourless vascular connective tissue derived from tissue fluid. RBCs and platelets are absent. Only leucocytes and floating amoeboid lymphocytes are present.
What is true about leucocytes ?
Leucocytes are colourless, nucleated amoeboid cells found in blood which are devoid of haemoglobin and are capable of coming out of blood capillaries through the process of diapedesis. Fall of WBC count is called leucopenia, and occurs due to folic acid deficiency and AIDS etc.
Pulmonary artery differ from pulmonary vein in having
Arteries have thick wall and narrow lumen while veins have thin walls and large lumen. Arteries do not have valves.
Hardening of the arteries due to deposition of cholesterol is called
Which one of the following statements about blood constituents and transport of respiratory gases is most accurate ?
RBCs as well as plasma both carry oxygen and CO2 in dissolved and chemically combined form.
The lymph serves to
An important function of lymph is to return interstitial fluid back to the blood. This interstitial fluid is also called extracellular fluid, which is formed from blood due to various factors, i.e. hydrostatic pressure,osmotic gradient etc.
Carbonic anhydrase occurs in
Carbonic anhydrase is a zinc-containing enzyme present in RBCs. In presence of this enzyme carbon dioxide reacts with water to form carbonic acid.
Fastest distribution of some injectible material/medicine and with no risk of any kind can be achieved by injecting it into the