Question

How do be breathe ?​

Answer 1

Answer:

We breathe a lot—roughly 10 times a minute! Have you ever wondered how the process of breathing works so smoothly? Our lungs allow us to inhale the oxygen our body needs, but they do much, much more. They also allow us to get rid of carbon dioxide, the waste product created in the body, and they play a vital role in singing, shouting and even giggling. In this activity you will make a model of a lung and use it to discover how air flows in and out of the lungs with ease.

All cells in our body need oxygen to create energy efficiently. When the cells create energy, however, they make carbon dioxide. We get oxygen by breathing in fresh air, and we remove carbon dioxide from the body by breathing out stale air. But how does the breathing mechanism work?

Air flows in via our mouth or nose. The air then follows the windpipe, which splits first into two bronchi: one for each lung. The bronchi then split into smaller and smaller tubes that have tiny air sacs at their end called alveoli. We have millions of alveoli in our lungs! These sacs have thin walls—so thin that oxygen and carbon dioxide can pass through them and enter or leave our blood.

The blood transports oxygen to almost every part of the body. The blood also gives the carbon dioxide a ride back to the lungs.

Lungs take up most of the space in the chest. The 12 pairs of ribs in our ribcage protect the lungs and other organs in our chest cavity, such as our heart.

Relaxed breathing is a reflex; we do not have to think to breathe. During this unforced inhalation our diaphragm—the dome-shaped muscle between the chest and the abdominal cavity—flattens. This expands the chest cavity and as a result air is drawn in. During exhalation the diaphragm relaxes and the lungs naturally recoil, and air is gently pushed out.

Explanation:

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Answer 2

First you correct your question. Question Will be

How do we breathe

1. so we breathe by nose

2. inhale oxygen

3.exhale carbon dioxide