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Which hormone shows the highest peak during the luteal phase?

A.

Progesterone

B.

LH

C.

FSH

D.

Estrogen

Answer and Explanation

The Correct Answer is A

A. Progesterone: During the luteal phase, the corpus luteum produces the highest levels of progesterone, which is crucial for preparing the uterine lining for potential implantation.

B. LH: Luteinizing hormone (LH) peaks just before ovulation, not during the luteal phase.

C. FSH: Follicle-stimulating hormone (FSH) is primarily active during the follicular phase and has lower levels during the luteal phase.

D. Estrogen: While estrogen levels do rise during the luteal phase, they do not peak as high as progesterone does.


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Related Questions

Correct Answer is A

Explanation

A. Rugae: The rugae are folds in the stomach lining that expand when the stomach fills with food, increasing surface area for digestion.

B. Microvilli: Microvilli increase surface area in the small intestine, not the stomach.

C. Peritoneum: The peritoneum is a membrane surrounding the abdominal cavity, not involved in surface area expansion of the stomach.

D. Muscularis: The muscularis is the muscle layer responsible for stomach contractions but does not increase surface area.

Correct Answer is B

Explanation

A. Subclavian duct: There is no specific "subclavian duct" for lymph drainage; lymphatic fluid drains into the subclavian veins.

B. Thoracic duct: The thoracic duct drains lymph from the lower limbs and the left side of the body, returning it to the circulatory system at the junction of the left subclavian and internal jugular veins.

C. Left lymphatic duct: The thoracic duct is often referred to as the left lymphatic duct but is not limited to just left drainage.

D. Right lymphatic duct: The right lymphatic duct drains lymph from the right upper quadrant of the body but does not drain lymph from the lower limbs.

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