LH surge:
1. | is a dramatic sudden increase in the levels of LH during the early part of menstrual cycle and is responsible for ovulation |
2. | is a dramatic sudden decrease in the levels of LH during the early part of menstrual cycle and is responsible for ovulation |
3. | is a dramatic sudden decrease in the levels of LH during the mid-menstrual cycle and is responsible for ovulation |
4. | is a dramatic sudden increase in the levels of LH during the mid-menstrual cycle and is responsible for ovulation |
Corpus luteum secretes large amounts of:
1. | LH | 2. | FSH |
3. | Progesterone | 4. | Estrogen |
Changes in the ovary and the uterus, during the menstrual cycle, are induced by the changes in the levels of secretion of:
1. | Ovarian hormones | 2. | Pituitary hormones |
3. | Both | 4. | None |
Zona pellucida is a membrane surrounding:
1. | Secondary oocyte | 2. | Secondary follicle |
3. | Corona Radiata | 4. | Trophoblast cells |
What ensures that only one sperm can fertilize the ovum?
1. Corona Radiata
2. Ground substance around ovum
3. Zona pellucida
4. Acrosome
Fertilization occurs at:
1. Infundibulum of the fallopian tube
2. Ampullary – isthmic junction of the fallopian tube
3. Fundus of the uterus
4. Body of the uterus
What is the usual number of primary follicles in both ovaries of a female at puberty?
1. | 60000 – 80000 | 2. | 120000 – 160000 |
3. | 1 million to 2 million | 4. | About 7 million |
In humans, the sex of the baby is determined:
1. | At the time of fertilization and by the father |
2. | At the time of fertilization and by the mother |
3. | At the time of implantation and by the father |
4. | At the time of implantation and by the mother |
At the birth of the female child, the follicles in her ovaries contain:
1. | Primary oocytes that have been arrested at the S phase of the cell cycle |
2. | Primary oocytes that have been arrested at prophase I of meiosis I |
3. | Secondary oocytes that have been arrested prophase I of meiosis I |
4. | Secondary oocytes that have been arrested at metaphase II of meiosis II |
During the follicular phase of the menstrual cycle, which of the following occur?
I: | The primary follicle grows and becomes a fully mature Graafian follicle. |
II: | The endometrium of the uterus regenerates through proliferation. |