Progesterone is secreted by
Corpus luteum
Utreus
Placenta
Graafian follicle
A.
Corpus luteum
Progesterone is a steroid hormone and main female sex hormone. It is secreted during the later half of the menstrual cycle in human females by temporary endocrine tissue, the corpus luteum. The luteinizing hormone (LH) of anterior pituitary brings about a rupture of the Graafian folllicle to release the ovum and changes the ruptured follicle into a yellow structure called corpus luteum, which secrets progesterone.
Refer to the given figure and choose the correct option regarding its parts labelled as A-F
B-Graafian follicle, F-Corpus luteum
C-Graafian follicle, A-Ovum
B-Primary follicle, C-Tertiary follicle showing antrum
E-Corpus callosum, D-Antrum cavity
Sertoli cells are found in testis. These cells are
nurse cells
reproductive cells
receptor cells
None of the above
Grey crescent is the area
at the point of entry of sperm into ovum
just opposite to the site of entry of sperm into ovum
at the animal poles
at the vegetal pole
If mammalian ovum fails to get fertilized which one of the following is unlikely?
Corpus luteum will disintegrate
Estrogen secretion further decreases
Primary follicle starts developing
Progesterone secretion rapidly declines
The immediate cause of induction of ovulation in female is the large plasma surge of
progesterone
estradiol
LH
FSH
