Any Info. something like Voluntary Control of breathing? Help!?
Hi...
I just wanted some help on some info. something like Voluntary Control of breathing in humans....
Thanks...
10 pts. to the best one...:)
Answers:
When we think of respiration, we think of an automatic, involuntary amusement, that brings enough air into the pulmonary alveoli to maintain the O2 and CO2 tension of alveolar gas or arterial blood at optimal levels in different conditions: rest, sleep or exercise. The optimal gas exchange must be controlled by the central neuronal complex, competent to integrate all information coming from the periphery and in return to give all right depth and frequency of breathing (minute ventilation). But respiration, unlike other involuntary activities is also under voluntary control. We can stop or increase breathing voluntarily. We can use expiratory air to speak or sing. Anatomically, in that are separate neurologic structures for automatic and voluntary control, although the two systems interact. The cerebral hemispheres control voluntary breathing and can be effective even when automatic control no longer functions.
If you stop ventilation voluntarily, you will find out that surrounded by spite of your efforts to prevent it, breathing will eventually start again. This is called the breaking point, which normally occur at PaO2 around 70 mmHg and PaCO2 around 50 mmHg. This suggests that the voluntary control of breathing is over-ridden by the automatic control and that the latter depends on the information from receptors sensitive to CO2 and O2 levels (in arterial blood and/or cerebro-spinal fluid). Source(s): http://www.medicine.mcgill.ca/physio/res…
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I just wanted some help on some info. something like Voluntary Control of breathing in humans....
Thanks...
10 pts. to the best one...:)
Answers:
When we think of respiration, we think of an automatic, involuntary amusement, that brings enough air into the pulmonary alveoli to maintain the O2 and CO2 tension of alveolar gas or arterial blood at optimal levels in different conditions: rest, sleep or exercise. The optimal gas exchange must be controlled by the central neuronal complex, competent to integrate all information coming from the periphery and in return to give all right depth and frequency of breathing (minute ventilation). But respiration, unlike other involuntary activities is also under voluntary control. We can stop or increase breathing voluntarily. We can use expiratory air to speak or sing. Anatomically, in that are separate neurologic structures for automatic and voluntary control, although the two systems interact. The cerebral hemispheres control voluntary breathing and can be effective even when automatic control no longer functions.
If you stop ventilation voluntarily, you will find out that surrounded by spite of your efforts to prevent it, breathing will eventually start again. This is called the breaking point, which normally occur at PaO2 around 70 mmHg and PaCO2 around 50 mmHg. This suggests that the voluntary control of breathing is over-ridden by the automatic control and that the latter depends on the information from receptors sensitive to CO2 and O2 levels (in arterial blood and/or cerebro-spinal fluid). Source(s): http://www.medicine.mcgill.ca/physio/res…
: )
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