When and where are primary oocytes formed in a human female ? Trace the development of these occytes till ovulation (in menstrual cycle).
How do gonadotropins influence this developmental process ?

Explain the development of a secondary oocyte ( ovum) in a human female from the embryonic stage upto its ovulation. Name the hormones involved in this process.

(a) Explain the menstrual phase in a human female. State the levels of ovarian and pituitary hormones during this phase. (b) Why is follicular phase in the menstrual cycle also referred as proliferative phase ? Explain. (c) Explain the events that occur in a Graafian follicle at the time of ovulation and thereafter. (d) Draw a Graafian follicle and label antrum and secondary oocyte.

(a) Explain the menstrual phase in a human female. State the levels of ovarian and pituitary hormones during this phase. (b) Why is follicular phase in the menstrual cycle also referred as proliferative phase ? Explain. (c) Explain the events that occur in a graffian follicle at the time of ovulation and there after. (d) Draw a graffian follicle and label antrum and secondary oocyte.

During the reproductive cycle of a human female, when, where and how does a Placenta develop ? What is the function of placenta during pregnancy and embryo development?

(i) How many primary follicles are left in each ovary in a human female at puberty ? (ii) Draw a sectional view of the ovary showing the different follicular stages of a human female in her preovulatory phase of menstrual cycle.

(a) Draw a diagrammatic sectional view of the female reproductive system of human and label the parts (i) where the secondary oocytes develop (ii) which helps in collection of ovum after ovulation (iii) where fertilization occurs (iv) where implantation of embryo occurs. (b) Explain the role of pituitary and the ovarian hormones in menstrual cycle in human females.

(a) Draw a diagrammatic sectional view of the female reproductive system of human and label the parts (i) where the secondary oocytes develop (ii) which helps in collection of ovum after ovulation (iii) where fertilization occurs (iv) where implantation of embryo occurs. (b) Explain the role of pituitary and the ovarian hormones in menstrual cycle in human females.

Read the following statements carefully. (1) Female external genitalia include labia majora , labia minora , clitoris , vagina, and hymen . (2) In female, at puberty , both ovaries contain about 60,000-80,000 primary follicles . (3) The progesterone hormone concentration remains high prior to ovulation in the follicular phase of the follicular phase of the menstrual cycle . (4) The second meiotic division of secondary oocyte is completed inside ovary only after the entry of sperm. How many from the above are incorrect statements ?

Given below are three statements each with one or two balnks select the option which correctly fills up the balnks in any two statements. (A) In human beings, menstrual cycle ceases around 50 years of age: this is termed as (i). (B) The milk produced during the initial few days of lactation is called (i) which contains several (ii) absolutely essential to develop resistance for the new-born babies. (C) At the completion of the (i) divison, the primary oocyte divides into secondary oocyte and (ii).