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In which structure does fertilization usually occur?

A.

Uterine tube

B.

Uterus

C.

Ovary

D.

Urinary bladder

Answer and Explanation

The Correct Answer is A

A. Uterine tube: Fertilization typically occurs in the uterine tube (also known as the fallopian tube). The sperm travels from the cervix through the uterus and into the uterine tube, where it meets and fertilizes the egg.

B. Uterus: The uterus is where the fertilized egg implants and develops into a fetus, but it is not where fertilization occurs.

C. Ovary: The ovary is where eggs are produced and released during ovulation, but fertilization does not occur here.

D. Urinary bladder: The urinary bladder is part of the urinary system, not the reproductive system, and has no role in fertilization.


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Related Questions

Correct Answer is True

Explanation

Progesterone actually works to maintain the uterine lining and prevents uterine contractions during pregnancy, helping to prevent premature labor. Therefore, this statement is false.

Correct Answer is B

Explanation

A. It stimulates angiotensin II secretion: Antidiuretic hormone (ADH) does not directly stimulate angiotensin II secretion; instead, it acts on the kidneys to promote water reabsorption.

B. It promotes water conservation: ADH promotes water conservation by increasing water reabsorption in the kidneys, reducing urine output, and thus helping to maintain fluid balance.

C. It inhibits salivation and thirst: ADH does not inhibit salivation or thirst; in fact, it can increase thirst to encourage fluid intake when dehydration is detected.

D. It stimulates hypothalamic osmoreceptors: While ADH affects hypothalamic osmoreceptors indirectly by promoting water retention, its primary function is to act on the kidneys to conserve water.

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