Male Sexual Anatomy & Physiology

Male Sexual Anatomy & Physiology

The Penis
* Nerves, blood vessels, fibrous tissue, and three parallel cylinders of spongy tissue.
* There is no bone and little muscular tissue (although there are muscles at the base of the penis)
* Terms:
* Penis: consists of internal root, external shaft, & glans.
* Root: the portion of the penis that extends internally into the pelvic cavity.
* Shaft: the length of the penis between the glans and the body.
* Glans: the head of the penis; has many nerve endings.
* Cavernous bodies: the structures in the shaft of the penis that engorge with blood during sexual arousal.
* Spongy body: a cylinder that forms a bulb at the base of the penis, extends up into the penile shaft, and forms the penile glans. Also engorge with blood during arousal.
* Foreskin: a covering of skin over the penile glans.

Fig 5.1a Interior structure of the penis:
External penile structures
Scrotum and testes
* Scrotum (or scrotal sac):
* Testis
o Male gonad inside scrotum that produces sperm and sex hormones
* Spermatic cord
o A cord attached to the testis inside the scrotum that contains the vas deferens, blood vessels, nerves, and muscle fibers
Structures inside the testis
Cross-section of seminiferous tubule
Interstitial cells: secrete androgens
Spermatogenic cells: produce sperm
Immature sperm
Vas deferens
Overview: male sexual anatomy
Seminal vesicles
Prostate gland
Cowper’s glands
Semen
Analagous structures in male and female sexual anatomy
Male
Glans
Foreskin
Shaft
Scrotal sac
Testes
Female
Clitoris
Clitoral hood
Labia minora
Labia majora
Ovaries
Group activity: male A & P flashcards
One side: name of term
Other side: definition, function, location
Group activity:
Male reproductive anatomy & physiology
Male sexual function: Erection
How blood inflow helps maintain erection
Ejaculation
Emission phase of ejaculation (phase 1)
Penis size
Penile Augmentation (phalloplasty)
Circumcision
Circumcision: medical perspective
Circumcision and sexual functioning
Discussion question:
Penile cancer
Testicular cancer
Prostate Health Care Issues
Prostate Cancer
Prostate Cancer: Symptoms & diagnosis

Male Sexual Anatomy & Physiology.ppt