No neuronal cell bodies are present. It releases a factor that stimulates release of thyroid hormone from the thyroid gland. It is derived from neural ectoderm. Varicocele is dilation of the veins of the pampiniform plexus that causes infertility in the male. Keratogenesis is a condition in which the tesis will remain in the body cavity and the individual is infertile.
Endometriosis is a condition that causes male infertility.
In cryptorchidism, the male is infertile because of the lack of seminal vesicles and vas deferens. In cryptorchidism, the secondary male characteristic will not develop because the synthesis of testosterone is not normal. Raises calcium levels by directly stimulating osteoblasts to stimulate osteoclasts. Releases a hormone that acts antagonistically to calcitonin. Releases a hormone that acts antagonistically to insulin.