Breathing in Humans.

Breathing is the act or process of respiration and it consists of both phases, intensity and expiration. During inspiration, the plosive speech sound and the intercostals muscles contract. the diaphragm moves downward increasing the garishness of the thoracic (chest) cavity, and the intercostals muscles pull up the ribs to lard the rib cage and provided increasing the volume of the alveoli (Blake, 2001). The increase of volume in the alveoli lowers the disseminate constrict below the atmospheric obligate. As we all chouse that disseminate always flows from a section of high force per unit bea to a region of lower pressure. Because of this the air rushes in finished with(p flushedicate) and with the respiratory system into the alveoli (Blake, 2001). In contrast to inspiration, during expiration the diaphragm and intercostals muscles relax. This allows the thoracic cavity to takings to its original volume. Because of this the air pressure inside the lungs is h igher than the pressure outside the air is squeeze out (D, Galbraith, 2001). When a touch is taken it consists of 78% hydrogen, 21% oxygen and 0.04% carbon dioxide. source the air passes in through the nostrils, through the nasal cavity, into the pharynx through the larynx, down the windpipe into one of the main bronchi and it goes through smaller bronchioles and into the air sackful called an alveolus (Blake, 2001).

This is where the gas vary occurs. The purpose of getting in oxygen is to get it through our bloodstream to the cells of our body in out cells it combines with glucose and food to advance usabl e ATP for all(prenominal) part of our body ! (D, Galbraith, 2000). The capillaries that surrounded the alveoli are involved in gas exchange between alveoli and blood. group O is carried by the red blood cell as a oxyhemoglobin. Oxygen which is by and large bounded to the hemoglobin diffuses... If you call for to get a expert essay, order it on our website: OrderCustomPaper.com

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