When a diploid organism undergoes one or more rounds of endoreduplication (resulting in a gain of more than one complete haploid set of chromosomes), the resulting cells are best described as

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#Question id: 34147

#Unit 7. System Physiology – Animal

Which of the following statements not CORRECT regarding the mechanism and reproductive role of prolactin during lactation?

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#Question id: 34148

#Unit 7. System Physiology – Animal

Assertion (A): Prolactin stimulates the synthesis of casein and lactalbumin during lactation without acting directly on the cell nucleus.

Reason (R): The action of prolactin is dependent on intact microtubules, suggesting involvement of cytoplasmic transport or signaling components.

Choose the correct option:

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#Question id: 34149

#Unit 7. System Physiology – Animal

A scientist finds that infusion of growth hormone into the median eminence of the hypothalamus in experimental animals inhibits the secretion of growth hormone and concludes that this proves that growth hormone feeds back to inhibit GHRH secretion. Do you accept this conclusion?

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#Question id: 34150

#Unit 7. System Physiology – Animal

A 7-year-old boy is evaluated for short stature. His average circulating growth hormone level is within the normal range for his age, but levels of IGF-I are reduced. His growth failure is most likely due to a defect in:

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#Question id: 34151

#Unit 7. System Physiology – Animal

During childbirth, a woman suffers a serious hemorrhage and goes into shock. After she recovers, she displays symptoms of hypopituitarism. Which of the following will not be expected in this patient?

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#Question id: 34152

#Unit 7. System Physiology – Animal

Choose correct one.