Portfolio Respiration

Respiration is the act of breathing


Inhaling (inspiration) - taking in oxygen and exhaling (expiration) - giving off carbon dioxide.The respiratory system is made up of the organs involved in breathing and consists of the: nose, pharynx, larynx, trachea, bronchi, lungs. When the oxygen passes through the larynx more speech sounds are produced.

Respiration is slightly different, where exercise causes muscles to release energy in the form of glucose. Both systems are co-dependent, especially when you’re playing sport and inhaling greater quantities of oxygen.

When breathing air is warmed, moistened and filtered as it travels through the mouth and nasal passages.It then passes through the trachea and one of the two bronchi into one of the lungs.After passing into the many bronchioles, it finally arrives into some of the millions of tiny sacs called alveoli.This is where gas exchange takes place - oxygen passes out of the air into the blood, and carbon dioxide passes out of the blood into the air in the alveoli. When you inhale the intercostal muscles contract, expanding the ribcage. The diaphragm contracts, pulling downwards to increase the volume of the chest. Pressure inside the chest is lowered and air is sucked into the lungs. When you exhale the intercostal muscles relax, the ribcage drops inwards and downwards the diaphragm relaxes, moving back upwards, decreasing the volume of the chest. The pressure inside the chest increases and air is forced out. 

The diaphragm's job is to help pump the carbon dioxide out of the lungs and pull the oxygen into the lungs.The diaphragm is a sheet of muscles that lies across the bottom of the chest cavity. As the diaphragm contracts and relaxes, breathing takes place. When you Inhale the diaphragm goes down and flattens,it tenses and the lungs get expand and fill with air. When you exhale the diaphragm pushes up and is relaxed and helps to force the air out of the lungs

Inhaled air contains more oxygen used to create energy less carbon dioxide than exhaled air which contains more carbon dioxide produced as a waste product of energy production less oxygen as it has been used in Respiration. Gas exchange takes place by diffusion in the alveoli within the lungs. As a result the composition of inhaled and exhaled air is different.