Question:
At high altitudes, RBC of human blood will
At high altitudes, RBC of human blood will
Updated On: Jul 5, 2022
- Increase in number
- Decrease in number
- Decrease in size
- Increase in size
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The Correct Option is A
Solution and Explanation
At high altitude composition of air remains almost same as that of sea level, but density (barometric pressure) of air gradually decreases due to which arterial pO is also decreased (hypoxemia).A high altitude shows complex conditions to which human body has to acclimatize. Number of red blood cells per unit volume of blood is likely to be higher in a person living at high altitudes. This is in response to the air being less dense at high altitude and number of red blood cells is needed to trap O from rarefied air having lowp O (partial pressure of oxygen).
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Concepts Used:
Breathing and Exchange of Gases
A metabolic process, which is carried out by all living organisms including plants, animals, and humans for the production of energy and to stay alive is Respiration. Except for required anaerobes, every other organism from amoeba to humans needs oxygen for survival. And evolution has reported a number of systems that allows the exchange of gases in organisms.
There are two types of respiration such as;
- Aerobic respiration — to produce energy, it occurs in the presence of oxygen
- Anaerobic respiration — to produce energy, occurs in the absence of oxygen
Breathing can be simply derived as the process of inhaling oxygen gas from the atmosphere and exhaling the carbon dioxide gas back into the atmosphere is termed breathing and the process is commonly known as respiration.
Read More: Breathing and Exchange of Gases