he pharynx join the nasal depression and the mouth to the larynx and throat. The pharynx dividers are skeletal muscles. The pharynx is at the base of the skull down to the sixth cervical vertebra. The structure of the pharynx helps when playing O2 touch, as we take full breaths amid activity, air experiences in mouth increasingly and afterward goes to the lungs to be transported to the muscles. Nasal depression The nose is the main outer part of the respiratory framework and the inner part is the nasal depression. Amid motivation air races through the nostrils and the hairs in the maritime cavity channels the dust and dust particles. The nasal hole has two mucous films which traps microscopic organisms and after that secretes antibacterial …show more content…
Gases exchange by diffusion across the respiratory membrane. Oxygen diffuses into the blood and carbon dioxide diffuses from the blood into the lungs. alveoli Diaphragm When breathing in, the diaphragm contracts causing the thoracic cavity volume to increase, which makes air rush into the lungs. When breathing out, the diaphragm relaxes decreasing the volume of the thoracic cavity pushing the air out. This is an important part of respiration during exercise (O2 touch) as more air is needed in the body and carbon dioxide needs to be breathed out. Intercostal muscles The intercostal muscles are found between the ribs; these muscles contract and extend helping with breathing in and out. These muscles are important for when playing sport (O2 touch) as breathing in and out is assential when trying to get more oxygen to supply the muscles and to breath Co2 out. The external intercostals increase the volume of the thoracic cavity drawing air into the lungs when breathing in as the ribs are pulled upwards and outwards. External intercostal muscles Rib external intercostal …show more content…
Function - transport Oxygen is breathed into the lungs and is diffused into the blood via the surface of the aveoli in the capillaries and combines with haemoglobin which are in the red blood cells, then forming oxyhaemoglobin. Depending on the concentration of the blood results in the amount of oxygen taken up by the blood to reach equilibrium. Carbon dioxide is carried to the veins via the cardiovascular system where it is diffused into the lungs and then breathed out as a waste product of aerobic processes. Haemoglobin is the component which carries oxygen in red blood cells. It is a protein which can combine with oxygen to form oxyhaemoglobin. Oxyhaemoglobin is formed when oxygen combines with haemoglobin. It is then carried in the blood to body tissues/muscles where the oxygen is released by tissue respiration. Mechanisms of breathing Mechanisms of breathing Tidal volume Inspiratory reserve volume Expiratory reserve volume Respiratory volumes This is the volume of air inhaled and exhaled per