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4 the penis figure2811 corpus cavernous

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Unformatted text preview: rection – during sexual excitement, the erectile tissue fills with ______ causing the penis to enlarge and become rigid Corpus spongiosum – surrounds the urethra and expands to form the glans and bulb of the penis Corpora cavernosa – paired dorsal erectile bodies bound by fibrous tunica albuginea The Penis The Penis Figure 27.4 The Penis Figure 28.11 Corpus cavernous Corpus spongiosum Spermatic Ducts Spermatic Epididymis (head, body and tail) 6 m long coiled duct adhering to posterior of testis site of sperm maturation and storage (fertile for 60 days) Ductus deferens/vas deferens (peristalsis during orgasm) muscular tube 45 cm long passing up from scrotum through inguinal canal to posterior surface of bladder Ejaculatory duct 2 cm duct formed from ductus deferens and seminal vesicle and passing through prostate to empty into urethra Epididymis Epididymis Nonmotile sperm enter, pass through its tubes and become motile Upon ejaculation the epididymis contracts, expelling sperm into the __________ Vas deferens Epididymis Ejaculatory duct The Epididymus and vas deferense The Figure 28.9 The E...
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