SEE ALSO Adrenal Gland ; Amino Acid ; Blood Sugar Regulation ; Endocrine System ; Female Reproductive System ; Homeostasis ; Hypothalamus ; Male Reproductive System ; Nucleotides ; Pancreas ; Pituitary Gland ; Thyroid Gland ; Transcription
There are also many synthetic sex steroids. Synthetic androgens are often referred to as anabolic steroids . Synthetic estrogens and progestins are used in methods of hormonal contraception . Ethinylestradiol is a semi-synthetic estrogen. Specific compounds that have partial agonist activity for steroid receptors , and therefore act in part like natural steroid hormones, are in use in medical conditions that require treatment with steroid in one cell type, but where systemic effects of the particular steroid in the entire organism are only desirable within certain limits. 
The plastic surgeon starts the perineal dissection by transversely incising the end pouch of the penile skin or the end of vaginal mucosa in the case of vaginal astresia. The dissection is carried out by eletrocautery, by palpating the urethral catheter anterior up to the retrobladder properitoneal space and the peritoneum is incised and enlarged. The general surgeon deliver the colon through the peritoneal opening after closing the proximal end, generally the rectosigmoid opening could be pulled down to the perineal skin without any tension, the anastomosis is made to the vaginal skin cuff at 1- 2 inches from the perineum, using the interrupted chronic catgut.