Q. No.Sperm-producing cells have unique antigens yet they are not attacked by the immune cells because of:
1.
antigens are recognized as self-antigens.
2.
acrosome at the tip.
3.
protection by the blood-testis barrier.
4.
inhibitors attached on the surface.
Spermatic cord does not include:
1. testicular artery.
2. lymphatic vessels.
3. ductus deferens.
4. ejaculatory duct.
Cryptorchidism may lead to sterility due to:
1. relatively high internal body temperature.
2. excessive production of estrogen.
3. lack of testosterone.
4. non-function of the SRY gene.
In males, the secondary sexual characters develop in response to:
1. ICSH
2. FSH
3. testosterone
4. gonadotropin-releasing hormone
In males, FSH:
1. inhibits progesterone.
2. initiates testosterone production.
3. increases protein synthesis.
4. increase spermatogenesis.
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The Papanicolaou test [PAP smear] is a method of screening used to detect potentially pre-cancerous and cancerous processes in the
1. urethra.
2. ovary.
3. cervix.
4. ovaries.
Menstrual irregularities may be seen in women athletes due to:
| 1. | increase in androgen secretion by the adrenal cortex |
| 2. | decrease in androgen secretion by the adrenal cortex |
| 3. | increased secretion of GnRH |
| 4. | decreased secretion of GnRH |
The endometrium is maintained in a healthy condition in the latter half of the pregnancy by:
1. FSH and LH
2. human chorionic gonadotropin
3. Ovarian steroids
4. placental estrogen and progesterone
The endometrium is the most developed:
1. during the menstrual phase.
2. just after the menstrual phase.
3. just after ovulation.
4. late in the postovulatory phase.
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What happens to the corpus luteum if fertilization does not take place?
| 1. | It secretes more progesterone. |
| 2. | It stops secreting progesterone but continues to secrete estrogen. |
| 3. | It degenerates into the corpus albicans. |
| 4. | It secretes gonadotropins |
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