Define arrow. arrow synonyms, arrow pronunciation, arrow translation, English dictionary definition of arrow. n. 1. A missile having a straight thin shaft with a pointed head at one end and often flight-stabilizing vanes at the other, meant to be shot from a bow.
FSH stimulates the growth and recruitment of immature ovarian follicles in the ovary. In early (small) antral follicles, FSH is the major survival factor that rescues the small antral follicles (2â5 mm in diameter for humans) from apoptosis (programmed death of the somatic cells of the follicle and oocyte).
1 Two hormones, follicle stimulating hormone (FSH) and luteinizing hormone (LH), are released from the brain and travel in the blood to the ovaries. 2  The hormones stimulate the growth of about 15 to 20 eggs in the ovaries, each in its own shell, called a follicle.