Breathing process is subject to a number of changes in the human body and these factors and the changes are:
1. Central nervous factors:
A .. The hypothalamus plays a definite role in the process of breathing disorder, and can be seen during the emotion and get more rapid breathing.
B. Cerebral cortex: play a role in the change process of breathing during laughing or talking or attention.
2. Chemical agents: The occurrence of any chemical change of the blood disorder works on the central nervous system respiratory centers, and therefore affect the breathing process,
This effect is in two ways: one directly on the nerve centers and respiratory second indirectly, any reflex through receptors located on the walls of the aortic and carotid arteries. The most important factors affecting breathing is the degree of acidity (PH ) And the rate of both oxygen and carbon dioxide.
3. Mechanism factors: a. Effort and hard work that increases the speed of breathing, leading to increased need for oxygen. B. Low blood pressure, which works on rapid breathing reflex indirectly influence.
4. Temperature rise is working to increase the speed of breathing in two ways: directly on the upper respiratory centers and indirectly reflex through receptors.
5. Pain increases the speed of breathing reflex influence by respiratory receptors.
6. Strain increases the speed of breathing reflex influence by respiratory receptors.
7. Circumstantial factors such as irritation of the airways of dust and gas increases the speed of breathing reflex effect.
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respiratory device