Question

Examples of sex hormones secreted by ovary is
A. FSH and LH
B. FSH, LH and Progesterone
C. Progesterone and oestrogen
D. FSH, LH and oestrogen

Answer 1

The female reproductive system consists of primary sex organ known as ovary.
There is an ovary found on each side of the body.
Ovaries are the primary female sex organs that produce the female gamete known as ovum or egg and several steroid hormones.
Each ovary is about 2-4 cm in length.

Complete answer:
The ovary is a primary female sex organ found in each side of the lower abdomen.
Ovulation: Ovulation is the release of the ovum or egg from one of the female’s ovaries.
After the release of egg, egg travels down to the fallopian tube where fertilization may occur with sperm.
It typically lasts for one day and occurs in the middle of women’s menstrual cycle.
Ovulation is followed by the luteal phase during which the remaining parts of the graafian follicle get converted into corpus luteum.
At puberty, hypothalamus releases gonadotropin releasing hormone (GnRH) which stimulates the anterior pituitary gland.
The latter secrete the FSH/LH from the anterior pituitary gland.
FSH- It stimulates the growth of graafian follicle, maturation of ovum, secretion of estrogen by follicle cells.
Estrogen, or oestrogen: It is the primary female sex hormone.
It is responsible for the development and regulation of the female reproductive system and secondary sex characteristics.
LH- It stands for luteinising hormone stimulates release of ovum, formation of corpus luteum in the empty follicle and secretion of progesterone from the corpus luteum.
Progesterone suspends ovulation during pregnancy, maintains foetal connection with the uterine wall and controls development of foetus in the uterus.
If fertilization fails, means no pregnancy so progesterone level decreases to restart the process of ovulation.

So, the correct option is option C. Progesterone and oestrogen.

Note: Menstrual cycle: The reproductive cycle in the female primates is known as menstrual cycle.
Menarche: It is the starting of the menstrual cycle.
Menopause: It is the ceases of the menstrual cycle usually occurs at the age of 50 years.
Various events of menstrual cycle are:
1. Menstrual phase
2. Follicular phase
3. Ovulatory phase
4. Luteal phase