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NEET2007ZoologyBody Fluids and CirculationActual

A drop of each of the following, is placed separately on four slides. Which of them will not coagulate?

Options

  1. Ablood serum
  2. Bsample from the thoracic duct of lymphatic system
  3. Cwhole blood from pulmonary vein
  4. Dblood plasma.

Correct answer

A. blood serum

Step-by-step solution

Serum is the component of blood which does not play a role in clotting. Serum includes all proteins not used in blood clotting; all electrolytes, antibodies, antigens, hormones; and any exogenous substances (e.g., drugs or microorganisms). Blood serum = Blood -( cell + clotting factors) Caution Serum is the liquid that remains after the blood has clotted. Plasma is the liquid that remains when clotting is prevented with the addition of an anticoagulant.

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