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
Cleavage is:
(1) Dissolution of the zona pellucida
(2) A specialized mitotic division in late fetus
(3) A specialized meiotic division in late fetus
(4) A specialized mitotic division in zygote and early embryo
Morula is a solid ball of cells during early embryonic development and consists of:
(1) 4 – 8 cells
(2) 8 – 16 cells
(3) 24 – 30 cells
(4) 60 – 72 cells
The fetal body is covered with fine hair, eyelashes separate, and eyelashes are formed by the end of:
(1) 20 weeks
(2) 24 weeks
(3) 28 weeks
(4) 30 weeks
The signals of fetal ejection reflex originate from:
1. Maternal pituitary
2. Maternal hypothalamus
3. Fully developed fetus and placenta
4. Fetal pituitary
To induce uterine contractions for parturition which of the following hormones can be injected to the female?
(1) hCG
(2) Estrogen
(3) Progesterone
(4) Oxytocin
What happens when a sperm enters the cytoplasm of the secondary oocyte?
(1) Release of first polar body
(2) Completion of meiosis II
(3) Degeneration of polar bodies
(4) Dissolution of zona pellucida
Consider the following two statements:
I. Not all copulations lead to fertilization and pregnancy
II. Fertilization can occur if the ovum and the sperms are simultaneously transported to the fallopian tubes.
1. Both I and II are correct and II correctly explains I
2. Both I and II are correct but II does not explain I
3. I is correct but II is incorrect
4. I is incorrect but II is correct
Corpus luteum secretes large amounts of:
(1) LH
(2) FSH
(3) Progesterone
(4) Estrogen
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.