Pituitary production of these hormones depends on secretion of gonadotropin-releasing hormone GnRH by the hypothalamus. If your son has symptoms of a problem with his reproductive system, talk with your doctor — many problems with the male reproductive system can be treated. How is sperm produced? As a result of the stimulation, the semen, which contains up to million sperm , is pushed out of the penis ejaculated through the urethra. The nervous system plays an important role in controlling erection and ejaculation. The accessory sex glands consist of a single prostate gland and paired seminal vesicles and bulbourethral glands. In higher vertebrates, especially mammals, sperm are produced in the testes.
Not sure what college you want to attend yet? Journal of Forensic Sciences. This site complies with the HONcode standard for trustworthy health information: With sufficient stimulation, mature sperm travel from the epididymis through the vas deferens, a muscular tube, which propels sperm forward through smooth muscle contractions. Supportive Structures of the Nephron:
Male Reproductive System - Biology Encyclopedia forum. The glands, which measure only about 1 cm 0. The nervous system plays an important role in controlling erection and ejaculation. Overview The key male reproductive organs include the testes, epididymis, urethra, vas deferens, prostate gland, seminal vesicle, and penis. We'll go over the different structures within each testis and how they function. The testicles are oval-shaped and grow to be about 2 inches 5 centimeters in length and 1 inch 3 centimeters in diameter. The penis, which usually hangs limp, becomes hard when a male is sexually excited.