Guy Stuff A quick tour of essential anatomy and related function. To insert your company logo on this slide From the Insert Menu Select “Picture” Locate your logo file Click OK To resize the logo Click anywhere inside the logo. The boxes that appear outside the logo are known as “resize handles.” Use these to resize the object. If you hold down the shift key before using the resize handles, you will maintain the proportions of the object you wish to resize.

Testes –Paired –Develop from gonads within abdomen then descend into scrotal sacs –Scrotum maintains testes at cooler temperature –Sterility, due to too high body temperature.

Sperm Produced inside seminiferous tubules in testes. Matures in tubular epididymides behind each teste. Interstitial cells produce male sex hormone testosterone.

More Sperm... More Sperm... Composed of three parts: head, middle piece, and tail. Mitochondria ring middle piece and provide energy for sperm movement 100 million per ejaculation BUT...

Mature Sperm Propelled into vas deferens (ductus deferens) by muscle contractions. Move out of storage into urethra for ejaculation.

Prostate Gland Surrounds urethra below bladder; secretes milky alkaline fluid (one component of semen) that aids sperm motility and survival. Enlargement common problem

Cowper’s Gland Also known as bulbourethral glands. Have mucous secretions with lubricating effect.

Seminal vesicles Two seminal vesicles join two vas deferns; secrete nutrients for sperm at time of ejaculation. Ejaculatory duct is single duct leading from two vas deferens; carries semen to urethra.

Penis Spongy tissue inside shaft of penis is flaccid with normal blood flow. Erection … increased blood flow to spongy tissue Impotency is failure to become erect

Path of Sperm... Epididymus Vas Deferens Urethra Vagina Oviduct