Withdrawal of which of the following hormones is the immediate cause of menstruation?
Eastrogens
FSH
FSH-RH
FSH-RH
D.
FSH-RH
Menstruation is caused by the reduction of estrogen and progesterone, especially progesterone at the end of monthly ovarian cycle. The first effect is decreased stimulation of the endometrial cells by these two hormones followed rapidly by involution of the endometrium itself to about 65% of its previous thickness.
Which one of the following pairs of organs includes only the endocrine glands?
Parathyroid and adrenal
Pancreas and parathyroid
Thymus and testes
Thymus and testes
Which part of ovary in mammals acts as an endocrine gland after ovulation?
Graaffian follicle
Stroma
Germinal epithelium
Germinal epithelium
Sertoli cells are regulated by the pituitary hormone known as
FSH
GH
Prolactin
Prolactin
In the human female, menstruation can be deferred by the administration of
LH only
Combination of FSH and LH
Combination of estrogen and progesterone
Combination of estrogen and progesterone
