Regarding the functions of our respiratory system, mark the wrong entry.a)Humidifies the airb)Warms up the airc)Diffusion of gasesd)All of the aboveCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Respiration involves the following steps:

(i) Breathing or pulmonary ventilation by which atmospheric air is drawn in and CO2 rich alveolar air is released
out.
(ii) Diffusion of gases (O2 and CO2) across alveolar membrane.
(iii) Transport of gases by the blood.
(iv) Diffusion of O2 and CO2 between blood and tissues.
(v) Utilisation of O2 by the cells for catabolic reactions and resultant release of CO2.

Answer

Respiration involves the following steps:

(i) Breathing or pulmonary ventilation by which atmospheric air is drawn in and CO2 rich alveolar air is released
out.
(ii) Diffusion of gases (O2 and CO2) across alveolar membrane.
(iii) Transport of gases by the blood.
(iv) Diffusion of O2 and CO2 between blood and tissues.

Answer

What is the meaning of warms up the air

Answer

Explanation:
Respiratory system is a vital system in our body that is responsible for the exchange of gases between the body and the environment. It consists of various organs and structures that work together to perform several functions. Let's discuss each function mentioned in the options and identify the incorrect one:

Humidifies the air:
- One of the functions of the respiratory system is to humidify the air we breathe in.
- The respiratory system contains specialized cells and structures that moisten the air by adding moisture to it.
- This is important because the air we inhale is usually dry, and humidifying it helps prevent irritation and damage to the respiratory passages.

Warms up the air:
- Another function of the respiratory system is to warm up the air before it reaches the lungs.
- The air we inhale is usually cooler than our body temperature, and warming it up helps maintain optimal conditions for gas exchange.
- This is achieved through the rich blood supply in the respiratory passages, which helps transfer heat to the inhaled air.

Diffusion of gases:
- The primary function of the respiratory system is the exchange of gases, specifically oxygen and carbon dioxide.
- Oxygen from the inhaled air is diffused into the bloodstream, while carbon dioxide, a waste product of cellular respiration, is diffused out of the bloodstream into the air.
- This exchange occurs in the alveoli, tiny air sacs in the lungs, where the walls are thin and permeable to gases.

All of the above:
- The statement 'All of the above' suggests that all the mentioned functions (humidification, warming up the air, and diffusion of gases) are correct functions of the respiratory system.
- However, this is the incorrect option because the respiratory system does not warm up the air.
- Instead, it humidifies the air and facilitates the diffusion of gases.

In conclusion, the wrong entry among the given options is 'b) Warms up the air.' The respiratory system humidifies the air and facilitates the diffusion of gases, but it does not warm up the air.

Answer

When cold air enters our body , it reaches to alveoli. The blood supply to alveolar membrane increases and heat radiation takes place. As a result, air gets warmer awa humified. Exchange/diffusion of gases is the primary function of alveoli.

Answer

All the above 3 options  are correct. hence d is the answer.

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