Mcq Reproduction

MCQ REPRODUCTION: 1. The ovaries remain inactive throughout childhood due to the absences of which of the following hormones: a. FSH & LH* b. Estrogen & progesterone c. FSH & Growth hormone d. Oxytocin and prolactin 2. Which of the following site is responsible for the release of FSH and LH hormones at the onset of puberty: a. Pituitary gland* b. Hypothalamus c. Ovary d. Uterus 3. Release of which of the following hormones is a function of theca interna cells of ovarian follicles: a. FSH & LH b. Estrogen & progesterone* c. FSH & Growth hormone d. Oxytocin and prolactin 4. FSH & LH mediate their actions through which of the following second messenger systems: a. cAMP* b. cGMP c. G-proteins d. Calcium-calmodulin system 5. An ovum surrounded by a single layer of granulose cells is found in a female of which age group: a. Prepubertal* b. Reproductive c. Perimenopausal d. Post menopausal 6. Which of the following hormones causes increase in the number of FSH receptors on the granulose cells: a. Estrogen* b. Progesterone c. GnRH d. LH 7. Which two hormones cause increased expression of LH receptors on granulose cells: a. FSH & Estrogen* b. FSH & Progesterone c. GnRH & Estrogen d. GnRH & Progesterone 8. The suppression of FSH production by one large follicle will cause the other follicles to develop into which of the following: a. Primodial follicle b. Primary follicle c. Graffian follicle

d. Atretic follicle* 9. In the proliferative phase of the follicle the mass of granulose cells secrete follicular fluid that contains: a. Estrogen* b. Progesterone c. FSH d. LH 10.Ovulation maturation inhibitor keeps the oocyte following in which of the phases of development: a. Anaphase I b. Anaphase II c. Prophase I d. Prophase II QUESTIONS 1. 2. 3. 4. 5.

Define ovarian cycle. What is the duration of normal menstrual cycle Is there any association of duration of menstrual cycle with fertility What are two significant events taking place in female menstrual cycle Which of the two gonadotrophic hormones are responsible for ovarian changes during menstrual cycle 6. Why does follicular development remain inactive during childhood 7. What is biochemical nature of FSH & LH 8. Describe physiological actions of FSH & LH on ovaries 9. Which substance inhibit the development of primordial follicle 10.When primordial follicle is changed in primary follicle 11.In which stage of miotic division ovum is suspended in primordial state 12.Describe the development of antral & vesicular follicle 13.Which hormone is responsible for follicular phase & what are it’s action 14.Describe the formation of theca interna & theca externa 15.What are the actions of FSH & estrogen during follicular phase 16.Describe the phenomena of atresia 17.What is the diameter of mature follicle at the time of ovulation.