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Chapter 3

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PSYC 350
Jason Winters

Psyc 350 Chapter 3 Notes Mens Bodies Mens reproductive anatomy is simpler than womens and because their sex organs are visible on the outside of their body they are cause of a lot of anxiety The Male External Genitalia Are the Penis and Scrotum Penis the erectile erotically sensitive organ in males its functions include sexual pleasure delivery of semen and urination Reproductively the penis is equivalent to the clitoris in a functional sense the penis corresponds to the clitoris urethra and vagina Uncircumcised penis have three visible portions a shaft a glans head and a foreskin Scrotum the sac behind the penis that contains the testicles Testicles or Testis indirectly visible through the sac but part of the internal male reproductive systemThe male gonads one of the two glands within the scrotum that produce sperm and secrete sex hormones Glans the terminal knob of the clitoris or the penis Foreskin the loose skin that partially or completely covers the glans in males who have not been circumcised circumcision is the removal of the foreskin The shaft of the penis contains three erectile structures two corpora cavernosa and a single corpus spongiosum Both of these structures extend into the body under the pubic bone forming the root of the penis Corpus Cavernosa either of two elongated erectile structures within the penis or clitoris which also extend backward into the pelvic floor Corpus Spongiosum a single midline erectile structure In both sexes it fills the glans in males it extends backward along the underside of the penis surrounding the urethra Root a ligament attaches the root of the penis to the pubis Two muscles are associated with the root the ischiocavernosus and bulbospongiosus muscles these muscles assist with erection and ejaculation Ejaculation the forcible expulsion of semen from the urethral opening usually accompanying orgasm The urethra discharges urine from the bladder and semen from internal reproductive glands It enters the root of the penis and travels its length exiting at the opening at the end of the glans Within the penis the urethra is entirely contained within the corpus spongiosum Corona the rim of the glans of the penis
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