Short Answer Type
Long Answer TypeShort Answer TypeDistinguish between
(a) IRV and ERV.
(b)Inspiratory and expiratory capacity.
(c) Vital capacity and Total lung capacity.
Long Answer TypeWhat are the major transport mechanisms for CO2
? Explain.
Transportation of carbon dioxide : It is transported in three forms :
1. In solution form : About 7% CO2 dissolves in plasma and is transported as such.
(2) Through RBCs: About 20 – 25% of CO2 is transported by the red blood cells as carbaminohaemoglobin. Carbon dioxide binds to the amino groups on the polypeptide chains of haemoglobin and forms a compound known as carbaminohaemoglobin.
(3) Through sodium bicarbonate: About 70% of carbon dioxide is transported as sodium bicarbonate. As CO2 diffuses into the blood plasma, a large part of it combines with water to form carbonic acid in the presence of the enzyme carbonic anhydrase. Carbonic anhydrase is a zinc enzyme that speeds up the formation of carbonic acid. This carbonic acid dissociates into bicarbonate (HCO3–) and hydrogen ions (H+).
Short Answer TypeWhat is Tidal volume? Find out the Tidal volume (approximate value) for a healthy human in an hour.
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