So in our discussion on the hypothalamus and the anterior pituitary gland, we said that the hypothalamus produces and releases a hormone known as GnRH, which stands for gonadotropin releasing hormone. And this hormone stimulates the interior pituitary gland to release two important types of hormones. We have the follicle stimulating hormone FSH and lee nizing hormone also known as LH. Now, when the luteinizing hormone is released into our bloodstream, it travels down to the capillaries of our simoniferous tubules and it attaches to the cell membrane of these latic cells and then basically stimulates these latic cells to release a special type of androgen known as testosterone. Now, testosterone is a steroid hormone and that means it is lipid soluble and it can easily pass across the cell membrane of target cells. So the receptor proteins of testosterone are found inside our cell.