Question

Write the functions of the following given biological terms
1. estrogens
2. progesterone
3. Relaxin​

Answer 1

Estrogens, progesterone and relaxin all are secreted by the corpus luteum.

Functions of Estrogens are as follows

• It help in maintenance of the female reproductive structures.

• It promotes the develoment of the female sacondary sex characteristics.

• It increase the anabolism of the protein.

• It helps in lowering of the blood chloestrol.

• It control and inhibit the release of GnRH, FSH and LH.

Functions of Progesterone are as follows

• It prepares endometrium for implantation of the zygote.

• It generally works with the estrogens.

• It help in secretion of the milk by mammary glands.

• Somehow it also inhibits the release of GnRH and LH.

Functions of Relaxin are as follows

• It stops the uterine smooth muscles from contraction.

• It dilates the uterine cervix.

• During working or labour it increases the flexibility of the public symphysis.

Answer 2

Answer:

Estrogen :

=> The estrogens are the sex harmone responsible for the development of female characteristics in humans.

=> They play an essential for the growth and development of female sex characteristics such as breasts, pubic,etc.

=> They are essential for the regulation of menstrual cycle and reproductive system.

=> During menstrual cycle, estrogen provides an environment suitable for fertilization, implantation and nutrition of early embryo.

=> Estrogens are produced in ovaries.

Progesterone :

=> Progesterone is also known as pregnancy harmone as it is responsible for pregnancy in females.

=> It regulates the inner lining of uterus.

=> Progesterone is produced by ovaries, placenta and adrenal glands.

=> Additionally, it has an anti-androgenic activity.

=> Progesterone has antiminerelocorticoid activity inducing sodium and water excretion.

=> Progesterone acts as antagonist to estrogens.

For example, estrogen can cause breast cyst while progesterone protects from breast cyst.

Relaxin :

=> The corpus luteum secrets a second peptide harmone called relaxin.

=> Relaxin acts on the cervix causing dilation and softening.

=> It relaxes the myometrium and plays an important role in parturation .

=> Relaxin is coded in two genes H1 and H2 on chromosome 9.

=> A physiological role for relaxin in the non-pregnant women has not been established.

=> It facilitates the birth process .

=> Relaxin level of blood reaches maximum at terminal stage of pregnancy.