7. Fetal hemoglobin A) Has higher affinity to Carbohydrates to ensure better nut

Question

7. Fetal hemoglobin A) Has higher affinity to Carbohydrates to ensure better nutrition to the fetus B) Has higher affinity to oxygen that shift the dissociation curve to the right C) Has higher affinity to oxygen that shift the dissociation curve to the left D) Has a greater affinity to Carbone dioxide that shift the dissociation curve to the right E) None of the above Carbon monoxide is poisonous because it A) Causes breathing to stop due to paralysis of the intercostal muscles B) Dissolve in the Ccrebrospinal fluid and inhibits the medullary centers C) Induces hemolysis of hemoglobin preventing oxygen binding D) Competes with oxygen binding to hemoglobin E) Slows the cilia in the respiratory tract 8. A patient is admitted to the hospital after head injury. MRI shows there is damage to the medulla oblongata. Why, then, would her breathing become irregular? A) ller stretch receptors in the lung are sending negative impulses to the respiratory centers B) The blood returning to the lungs from the brain is irritating because it is too high in oxygen. C) The respiratory center in the lungs is malfunctioning due to a lack of carbon dioxide. D) The damage to the brain is affecting the respiratory center in the medulla. E) Her swollen brain is causing a decrease in blood pressure. 9.

Explanation / Answer

7.fetal hemoglobin

C.has high affinity to oxygen that shift the dissociation curve to right.

8.carbon monoxide is poisonous because

D. It competes with oxygen binding to hemoglobin

Carbon monoxide has high affinity for hemoglobin. They easily displaces oxygen and binds to hemoglobin.

9.D. Damage to the brain is affecting the respiratory centres in medulla.

Respiratory centres are mainly situated in pons and medulla.they gets stimulated by low oxygen pressure in arterial blood and increased carbon diaoxide level.

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