Q. No.The most critical period of gestation where the fetus is most vulnerable to genetic birth defects from drugs taken by the mother is:
1. last trimester
2. third to sixth month
3. first trimester
4. a week prior to parturition
1. last trimester
2. third to sixth month
3. first trimester
4. a week prior to parturition
Implantation does not:
1. involve a blastocyst
2. occur in the uterine tube
3. establishes pregnancy
4. occurs by seventh-eighth day
Seminal plasma has contributions of all the following except:
1. bulbourethral glands.
2. testes.
3. seminal vesicles.
4. prostate gland
Type B spermatogonia divide to form:
| 1. | Type A spermatogonia. | 2. | spermatids. |
| 3. | a primary spermatocyte. | 4. | a secondary spermatocyte |
Identify the cell that can be seen in primordial, primary, secondary and tertiary follicle :
| 1. | oogonium | 2. | primary oocyte |
| 3. | secondary oocyte | 4. | ovum |
The number of mature ova produced by a young, healthy, nonpregnant adult woman each year would be:
| 1. | 0 | 2. | 6 |
| 3. | 12 | 4. | 24 |
The correct chronology in the ovarian cycle in a non-pregnant woman would be:
| 1. | corpus luteum > ovulation > primary & secondary follicles > vesicular follicle |
| 2. | primary & secondary follicles > vesicular follicle > ovulation > corpus luteum |
| 3. | ovulation > primary follicles > corpus luteum > secondary & vesicular follicles |
| 4. | ovulation > primary & secondary follicles > corpus luteum > vesicular follicle |
If pregnancy is established, the corpus luteum:
| I: | is no longer needed because of hormones produced by the pre-embryo |
| II: | typically continues to secrete progesterone through the third month of pregnancy |
| III: | transforms into a corpus albicans soon after the placenta is fully functional |
| 1. | I and II are correct | 2. | I and III are correct |
| 3. | I and II are incorrect | 4. | II and III are correct |
Identify the correct statement:
| 1. | GnRH stimulates the production of estrogen [in females] or testosterone [in males] directly |
| 2. | LH stimulates ovulation (female) or spermatogenesis (male) |
| 3. | FSH initiates and maintains the development of accessory sex organs (both sexes) |
| 4. | estrogen stimulates oogenesis (female only) |
Identify the cells that are haploid: (1) spermatogonia (2) primary spermatocytes (3) secondary spermatocytes (4) spermatids (5) spermatozoa
| 1. | 1, 2, and 3 | 2. | 2, 3, 4, and 5 |
| 2. | 3, 4, and 5 | 4. | 4 and 5 only |
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