Biology [1 Mark Question Answer]

Amnion: It is the extra-embryonic membrane that forms the sac around the developing embryo. It protects the foetus and secretes a shock absorbing fluid known as amniotic fluid that acts as a cushion for the embryo.

Sertoli cells: These provide nourishment to the developing sperms.

Uterus: The uterus or the womb is the organ where the developing foetus implants itself and grows to its full term. The wall of the uterus along with the villi given out by the amnion layer of the blastocyst form the placenta through which all nutrients reach the foetus and wastes are carried away.

Corpus luteum: It secretes two hormones, estrogen and progesterone, that help in maintaining uterine environment and pregnancy.

Implantation: The attachment of the mammalian blastocyst to the uterine wall, from where it derives further nourishment is known as implantation.

Fertilisation: The fusion of two gametes, male and female, to form the zygote is known as fertilisation.

Menopause: The cessation of menstrual cycle is known as menopause. Women usually experience it around the age of 45 to 50 years.

Puberty: The stage in humans when under the stimulus of pituitary gland, the gonads - ovaries in females and testes in males, begin to produce their own hormones, which leads to the beginning of oogenesis and spermatogenesis in the respective cases, accompanied by the development of secondary sexual characters.

Fallopian tube

Puberty

Epididymis

Menarche

Endometrium

Ovulation

Menopause