what is meant by mechanisms in human being???
Answers
the process of taking air into and expelling it from the lungs is called breathing.
The action of breathing in and out is due to changes of pressure within the thorax, in comparison with the outside. This action is also known as external respiration. When we inhale the intercostal muscles (between the ribs) and diaphragm contract to expand the chest cavity. The diaphragm flattens and moves downwards and the intercostal muscles move the rib cage upwards and out.
This increase in size decreases the internal air pressure and so air from the outside (at a now higher pressure that inside the thorax) rushes into the lungs to equalise the pressures.
When we exhale the diaphragm and intercostal muscles relax and return to their resting positions. This reduces the size of the thoracic cavity, thereby increasing the pressure and forcing air out of the lungs.
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Answer:
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Explanation:
It is not necessary to think, “I have to become spiritual.” You are a human being – one way of looking at it is you are a certain mechanism. This is a human mechanism that is functioning, which involves body, mind, emotions and energy – a whole lot of things which makes you a complete piece of life.
An example of a mechanism is a see-saw; motion is transferred evenly across a see-saw as long as there are equal amounts of force on both ends. An example of a mechanism is a lever; the drection, strength and amount of movement is controled by a lever.
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