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This Concept Map, created with IHMC CmapTools, has information related to: 31h. Penis, PENIS is Thin skin -No dermis, PENIS parts Body -Erectile tissue (encl. Tunica albuginia like testes) -2 dorsal masses -1 Ventral surrounds penile urethra -Penile Urethra ends in glans penis -Covered w/ prepuce (foreskin), Body -Erectile tissue (encl. Tunica albuginia like testes) -2 dorsal masses -1 Ventral surrounds penile urethra -Penile Urethra ends in glans penis -Covered w/ prepuce (foreskin) see Testes, Thin skin -No dermis see Integumentary system, PENIS References Male reproductive system, Termination of -Urinary system -Genital excurrent system -Both involve urethra see Urethra, PENIS References Pages 1300-1301, -Contains Cavernousblood spaces Endothelially lined (blood vessles) -Receive blood from dorsal & deep arts -Blood flow through dorsal at all times when flacid AV Shunt OPEN -Blood bypasses cav spaces, PENIS is Termination of -Urinary system -Genital excurrent system -Both involve urethra, Body -Erectile tissue (encl. Tunica albuginia like testes) -2 dorsal masses -1 Ventral surrounds penile urethra -Penile Urethra ends in glans penis -Covered w/ prepuce (foreskin) Erectile tissue -Contains Cavernousblood spaces Endothelially lined (blood vessles) -Receive blood from dorsal & deep arts -Blood flow through dorsal at all times, -Contains Cavernousblood spaces Endothelially lined (blood vessles) -Receive blood from dorsal & deep arts -Blood flow through dorsal at all times upon erection AV Shunt CLOSES -Blood enters cav spaces (engorgement) -PARASYMP -N.O. release ->relaxation of sm. musc -Incr. blood flow -cGMP -Destroyed by phosphodiesterase -Tunica Albigunia flattens Limits amount of erection, AV Shunt CLOSES -Blood enters cav spaces (engorgement) -PARASYMP -N.O. release ->relaxation of sm. musc -Incr. blood flow -cGMP -Destroyed by phosphodiesterase -Tunica Albigunia flattens Limits amount of erection see Guanylate cyclase, PENIS parts Root -Crura -Bulb -Associated muscles