Question

explain brifly the breathing cycle in the human body

Answer 1

In the throat, the trachea, or windpipe, filters the air. The trachea branches into two bronchi, tubes that lead to the lungs.

 

Once in the lungs, oxygen is moved into the bloodstream. Blood carries the oxygen through the body to where it is needed.

 

Red blood cells collect carbon dioxide from the body’s cells and transports it back to the lungs.

 

An exchange of oxygen and carbon dioxide takes place in the alveoli, small structures within the lungs. The carbon dioxide, a waste gas, is exhaled and the cycle begins again with the next breath.

 

The diaphragm is a dome-shaped muscle below the lungs that controls breathing. The diaphragm flattens out and pulls forward, drawing air into the lungs for inhalation. During exhalation the diaphragm expands to force air out of the lungs.

 

Adults normally take 12 to 20 breaths per minute. Strenuous exercise drives the breath rate up to an average of 45 breaths per minute.

Answer 2

hey mate✌✌

I think it's respiration not breathing

answer

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the main organ of human respiratory system are nose, nasal passage, trachea , bronchi , lungs and diaphragm

the air for respiration is drawn into our body through the nostrils present in the nose then the air goes into the Nasal passes the nasal passage is separated from the mouth cavity by a hard Bony plate

the nasal passage is linked with the fine hair and mucus it holds the dust particle present in the air which allow clean air to go into the pharynx which than goes into the windpipe pipe the air coming from the nostrils during breathing pass through trachea

trachea do not collapse even when there is no air because it is supported by rings of soft bones called cartilages

the trachea runs down the neck and divides into two smaller tubes called branch these two branches are connected with the two lungs

the lungs are present in the chest cavity the diaphragm separate from the abdomen cavity

each branch i a divided into number of smaller tubes called bronchioles it has tiny air sacs at the end

these air sacks are called alveoli there the exchange of gases take place

hope it helps❤❤❤

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