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42. Where is the NERVE CONTRROL CENTER for RESPIRATION? A. Brain Cortex B. Hypothalamus C. Brain...

42. Where is the NERVE CONTRROL CENTER for RESPIRATION?

A. Brain Cortex

B. Hypothalamus

C. Brain Stem

D. Spinal Cord

43. The affinity of hemoglobin for oxygen is decreased by?

A. Increase temperature

B. Increase pH

C. Decreased 2,3-DPG

D. Decreased Pco2

44. In order to maintain respiratory function at higher altitudes?

A. Erythropoietin secretion is increased.

B. Respiratory rate decreases.

C. The affinity of hemoglobin for oxygen is increased.

D. None of the above

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Answer #1

Answers.

42. (C) Brain stem

Explanation: Actually Medulla Oblongata is the respiratory nerve centre. And it is situated in the lower part of Brain stem. So option (C) Brain Stem is the right answer.

43. (A) Increase Temperature

Explanation: Increased temperatur will denature the bond between hemoglobin and Oxygen

44. (A) Erythropoietin secretion is Increased.

Explanation : Erythropoietin secreted by Kidney makes the body stable in higher altitude to maintain the respiratory function.

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