The part of the human brain where the main respiratory center is located is:
1. | pons varolii | 2. | cerebrum |
3. | medulla oblongata | 4. | thalamus |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe respiratory center in humans can be primarily stimulated by:
1. carbon dioxide and hydrogen ions
2. oxygen gas levels in the blood
3. oxygen gas levels in the hemoglobin
4. conscious feeling for the need for more oxygen
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe peripheral chemoreceptors in carotid and aortic bodies respond to:
1. hydrogen ion concentration.
2. levels of carbon dioxide in the blood.
3. levels of oxygen in the blood.
4. all of the above
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyWhat will happern to the rate and depth of breathing when blood carbon dioxide rises?
1. decreases | 2. increases |
3. stays the same | 4. stops |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyPneumotaxic center:
1. | moderates the function of the rhythm center |
2. | establishes the respiratory rhythm |
3. | is located in medulla oblongata |
4. | reduces the duration of expiration and thereby alters the respiratory rate |
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & BiologyThe peripheral chemoreceptors are:
1. more sensitive to a decrease in than to a decrease in
2. stimulated by hypocapnia
3. located in the medulla oblongata of the brain stem
4. more sensitive to a decrease in than to a decrease in
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NEET MCQ Books for XIth & XIIth Physics, Chemistry & Biology