Glands that control sperm production

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The testes lie outside of the body and are maintained at a temperature about two degrees Centigrade lower than the body's core temperature. Urethra passes through penis. The corpus spongiosum is a single tubular structure located just below the corpora cavernosa, which contains the urethra, through which urine and semen pass during urination and ejaculation, respectively. The primary and most well-known androgen is testosterone. Round cells called spermatogonia divide and differentiate eventually to become spermatozoa. Sperm is still produced and stored in crypt sites causing inflammation. Muscular tubes connecting the left and right epididymis to the ejaculatory ducts to move sperm.

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This fluid helps to lubricate the urethra for spermatozoa to pass through, and to help flush out any residual urine or foreign matter.

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Human Physiology/The male reproductive system

Three columns of erectile tissue: A spongy tissue, full of muscle, veins, arteries, etc. The dartos muscle is a layer of smooth muscle fibers in the subcutaneous tissue of the scrotum surrounding the scrotum. Testes The testes are two oval-shaped male reproductive glands that produce sperm and the hormone testosterone. It contains the testicles also called testesas well as many nerves and blood vessels. Alongside the testicles are the epididymis and the vas deferens, which make up the duct system of the male reproductive organs.

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