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What is the midcyle menstrual event stimulated by a surge of LH?

A.

Ovulation

B.

Menstruation

C.

Orgasm

D.

Emission

Answer and Explanation

The Correct Answer is A

A. Ovulation: LH (Luteinizing Hormone) surge around day 14 of the cycle triggers ovulation.

B. Menstruation: Occurs at the end of the cycle if no fertilization happens.

C. Orgasm: A sexual response, not controlled by LH surge.

D. Emission: Refers to movement of semen in males, not related to female reproductive cycle.


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Related Questions

Correct Answer is B

Explanation

A. Causes the release of hormones that form the Graafian follicle: Hormones like FSH and LH stimulate the development of the Graafian follicle; ovulation is the release of an egg from it.

B. Normally occurs on day 14 of a 28-day cycle: Ovulation typically occurs mid-cycle around day 14.

C. Normally occurs on day 28 of a 28-day cycle: Day 28 is usually the end of the cycle when menstruation begins, not ovulation.

D. Is caused by the secretion of hCG: Ovulation is triggered by a surge in luteinizing hormone (LH), not hCG.


Correct Answer is C

Explanation

A. "This test measures the amount of thyroid hormone that attaches to a protein in your blood.": That describes a thyroid hormone binding test, not TSH.

B. "This test detects antithyroid antibodies in your blood.": That describes a test for autoimmune thyroid conditions like Hashimoto's.

C. "The test determines whether your thyroid gland is overactive, appropriately active, or underactive.": TSH levels indicate how well the thyroid is functioning.

D. "This test measures the absorption of iodine and how it relates to the thyroid gland.": That describes a radioactive iodine uptake test.

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