Which one of the following is the correct statement for respiration in humans?
- Cigarette smoking may lead to inflammation of bronchi
- Neural signals from pneumotoxic centre in pons region of brain can increase the duration of inspiration
- Workers in grinding and stone-breaking industries may suffer, from lung fibrosis
- About $90\%$ of carbon dioxide $(CO_2)$ is carried by haemoglobin as carbamino- haemoglobin
The Correct Option is C
Solution and Explanation
Top Questions on Exchange Of Gases
Which of the following statements about the pharynx and larynx is/are correct?
(1) The pharynx serves as a pathway for both food and air.
(2) The larynx is involved in the production of sound.
(3) The pharynx contains the vocal cords.
(4) The larynx prevents food from entering the trachea.
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Statement I: Greenhouse gases are increasing due to industrial development, exponential increase in energy production and use
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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