Explain whole mechanisms of respiration in human beings. Plzz Plzz?

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Answer

Breathing is the process of  taking in oxygen-rich air and giving out carbon dioxide-rich air. Breathing in is 'inhalation' and breathing out is 'exhalation'.Inhalation involves bringing in air from outside the body into the lungs. When we breathe in, the size of our chest increases.  This happens because when air enters, the lungs expand and the ribs move outwards. Simultaneously, the diaphragm contracts and becomes flat. Thus, the size of our chest increases.Exhalation involves removal of CO2 from the body. When we breathe out, the size of our chest decreases. This happens because when air moves out of our lungs, the lungs contract,the ribs move back, and the diaphragm curves upwards into the chest decreasing the size of the chest.

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Thank u.... Could u explain this in more detail... By mentioning the mechanism of trachea alveoli.. Nd whatever happens there??

Answer

Respiration in Human Beings

Respiration in human beings is a complex process involving several organs and structures working together to ensure the exchange of gases necessary for survival. Here is a detailed explanation of the mechanisms involved in respiration:

1. Breathing
- Breathing begins with the contraction of the diaphragm and intercostal muscles, causing the chest cavity to expand.
- This expansion lowers the pressure in the lungs, allowing air to rush in through the nose or mouth.
- The air travels through the trachea, bronchi, and bronchioles before reaching the alveoli in the lungs.

2. Gas Exchange
- In the alveoli, oxygen from the inhaled air diffuses into the bloodstream through the thin walls of the capillaries.
- At the same time, carbon dioxide, a waste product of metabolism, diffuses from the blood into the alveoli to be exhaled.

3. Transport of Gases
- Oxygen is transported in the blood by binding to hemoglobin in red blood cells, forming oxyhemoglobin.
- Carbon dioxide is carried in the blood in multiple forms, including dissolved CO2, bicarbonate ions, and carbaminohemoglobin.

4. Cellular Respiration
- Once in the bloodstream, oxygen is delivered to cells throughout the body where it is used in cellular respiration to produce energy.
- This process generates carbon dioxide as a byproduct, which is then carried back to the lungs to be exhaled.

5. Regulation of Respiration
- The respiratory center in the brainstem regulates breathing by monitoring levels of oxygen, carbon dioxide, and pH in the blood.
- When these levels deviate from the normal range, signals are sent to adjust the rate and depth of breathing to maintain homeostasis.

Overall, respiration in human beings is a vital process that ensures the supply of oxygen and removal of carbon dioxide from the body to support cellular function and maintain overall health.

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Very simply explain it s Chand biology book.

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Plzzz unblok me anshu

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