explain the step of respiration in human
Answers
Answer: gas intake
Gas exchange
Gas transport are the steps involved in respiration
Explanation:
The physiology of respiration
In human physiology, respiration is the transport of oxygen from the clean air to the tissue cells and the transport of carbon dioxide in the opposite direction. This is only part of the processes of delivering oxygen to where it is needed in the human body and removing carbon dioxide waste.
Not all of the oxygen breathed in is replaced by carbon dioxide; around 15% to 18% of what we breathe out is still oxygen. The exact amount of exhaled oxygen and carbon dioxide varies according to the fitness, energy expenditure and diet of that particular person.
Air-breathing of humans, respiration of oxygen includes four stages:
Ventilation from the ambient air into the alveoli of the lung.
Pulmonary gas exchange from the alveoli into the pulmonary capillaries.
Gas transport from the pulmonary capillaries through the circulation to the peripheral capillaries in the organs.
Peripheral gas exchange from the tissue capillaries into the cells and mitochondria.
Note that ventilation and gas transport require energy to power mechanical pumps (the diaphragm and heart respectively), in contrast to the passive diffusion taking place in the gas exchange steps.
Nasal breathing of respiration process refers to the state of inhaling and exhaling through the nose.