Arrange the hormones hCG, LH, FSH, and relaxin in sequence of their secretion in pregnant women.Mention their source and function. [5]

The sequence of secretion of hormones in pregnant women:
$FSH⟶LH⟶hCG⟶relaxin$ . [1]

FSH: Follicular Stimulating Hormone is secreted by the anterior lobe of the pituitary gland. It stimulates the growth of the ovarian follicles in the ovary.

LH: Luteinizing hormone is secreted by the anterior lobe of the pituitary gland. It function is to induce ovulation. [0.5+0.5]

hCG : Human chorionic gonadotropin is secreted by the placenta. It stimulates the corpus luteum to secrete progesterone. [0.5+0.5]

Relaxin : Relaxin is secreted by the ovary and the placenta. It helps during child birth by relaxing the pelvic muuscles as well as the muscles of the cervix. [0.5+0.5]