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respiratory system - Coggle Diagram
respiratory system
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process of respiration
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types of respiration
aerobic
Aerobic respiration occurs in the presence of oxygen, it is the process which cells create energy with oxygen and food
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anaerobic
anaerobic respiration occurs when there is no oxygen present, it is less efficient that aerobic respiration and producess less energy
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lactic acid will be broken do to produce water and carbon dioxide, the amount of oxygen needed for this is called oxygen debt
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ATP provides energy to the cells, it is produced by the releasing of energy generating molecules (ATP) when glucose breaks down in the precense of oxygen
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uses of ATP
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chemical reactions ( active transport, protein synthesis)
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excersise and breathing
Exercise causes the frequency of breathing to increase in order to provide more oxygen for respiration and to pay off any subsequent oxygen debt
if they cannot meet the energy demand thay will also respire anaerobically, producing lactic acid.
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ventilation
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breathing out
- The diaphragm and intercostal muscles relax
- the diaphragm s pushed upwards by the liver and stomach as the rib-cage drops downwards and inwards
- The volume of the chest cavity decreases
- The pressure inside the chest cavity increase
- Air is pushed out of the lungs to equalize the pressure inside and outside the chest cavity
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- Inhaled air contains 21% oxygen and 0.04% carbon dioxide
2.In air sacs, some of the oxygen moves through the thin walls to the bloodstream
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smoking
somking causes chronic obstrusive lung disease (COPD), coronary heart disease and lung risks of several types of cancer
chemicals in cigarettes
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carbon monoxide
binds irreversibly to heamoblobin, reduces capacity of blood catty oxygen
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tar
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chronic bronchitis which simulares goblet cells and mocus glands to enlarge, producing more mucus
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emphysema develops as a result of frequent infection, phagocytes that enter the lungs release elastase, an enzyme that breaks down the elastic fibres in the alveoli, this causes less elastic alveoli, reduces surface area for gas exchange
diseases
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coronary heart disease
fatty deposits narrow the coronary arteries, this occludes the blood supply to the heart
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alveoli
There is a constant supply of oxygen to the avioly. There is a capilary next to the avioly separated by a thin wall for easy diffusion. When the poor oxygen RBC arrive the oxygen that is in the aviole diffuses to the capillary with the RBC making oxygen rich RBC. The carbon dioxide from the RBC diffuses the the avioli so it can be exhaled and released from the body. Then the oxygen rich RBC goes to the rest of the body
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