MRS

• Testis


  Where sperms are produced
• Epididymis


  Where sperms are temporarily stored
• Scrotal sac/scrotum


  Supports the testis and epididymis
• Vas deferens


  Where the sperm passes through from the testis before it joins the urethra
• Urethra


  Serves as passageway of both sperm and urine and terminates in the external urinary meatus of the penis
• Seminal vesicle


  Secretes fluid that forms part of the semen; secretion gives the semen its alkaline characteristic to counteract the acidity of the vaginal tract and therefore protect the sperm
• Prostate gland


  Secretes fluid that also provides alkalinity to the semen; it also contains proteolytic enzymes, citric acid, phosphatases, and lipids
• Bulbourethral glands


  Paired glands that produce clear, viscous secretion known as pre-ejaculate that helps to lubricate the urethra for sperm to pass through, neutralizing traces of acidic urine in the urethra, and helps flush out any residual urine or foreign matter
• Semen


  A mixture of sperm and spermatic duct secretions (about 10 percent of the total) and fluids from accessory glands that contribute most of the semen's volume
• Sperm


  • Haploid cells, consisting of a flagellum as a tail, a neck that contains the cell's energy-producing mitochondria, and a head that contains the genetic material
• Scrotum


  A pouch of skin suspended from the perineal area and divided into two sacs each containing one testicle and epididymis
• Testicle


  Where the sperm is made
• Scrotal tissue contracts in the absence of sufficient heat


  Pulling the testes up closer to the body where the temperature maintains the viability of sperm
• Urethra


  Runs the length of the penis from the bladder to the meatus
• Penis


  The flaccid penis fills with blood during arousal, causing an erection and allowing for the function of copulation/intercourse
• Smegma


  A lubricant produced under the prepuce on the penis
• Prepuce


  The foreskin that may be circumcised/removed for hygiene or religious reasons and covers the glans/head that is filled with nerve endings
• Testes


  • Oval-shaped, located in the scrotum, and each divided into 250 lobules with coiled seminiferous tubes where the sperm are formed
• Epididymis


  A tube 13-20 feet in length, coiled and lying on the side of each testicle, where the mature sperm are stored
• Sperm


  • The acrosome covering the head contains enzymes that help it penetrate the ova, the head carries the genetic material, the midpiece supplies energy, and the tail or flagellum provides motility
• Sperm carry either an X/female OR Y/male chromosome. Since all ova carry the X/female chromosome, the male sperm does influence the baby's sex
• Vas deferens


  Muscular tubes transporting sperm from the epididymis to the seminal vesicles
• Seminal vesicles


  Produce a slightly alkaline fluid that mixes with the sperm and becomes part of the semen ejaculated during the male orgasm, protecting the sperm from the acidity of the urethra
• Prostate gland


  Secretes an alkaline fluid that mixes with the sperm as part of the semen, and enlargement can obstruct the flow of urine through the urethra
• Cowper's or bulbourethral glands

  Produce another mucous-alkaline secretion in the urethra, excreted from the glands just before ejaculation