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PSCY137: Crooks, Baur: Chapter 5
Male Sexual Anatomy and Physiology: Term & Definition.
35
Psychology
Undergraduate 1
09/26/2009

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Term
penis
Definition
a male sexual organ consisting of the intenal root and the external shaft and glans
Term
root
Definition
the portion of the penis that extends internally into the pelvic cavity
Term
shaft
Definition
the length of the penis beween the glans and the body
Term
glans
Definition
the head of the penis; it is richly endowed with nerve endings
Term
cavernous bodies
Definition
the sructures in the shaft of the penis that engorge with blood during sexual arousal
Term
spongy body
Definition
a cylinder that forms a bulb at the base of the penis, extendds up into the penile shaft, and forms the penile glans
Term
foreskin
Definition
a convering of skin over the penile glans
Term
corona
Definition
the rim of the penile glans
Term
frenulum
Definition
a highly sensitive thin strip of skin that connects the glans to the shaft on the underside of the penis
Term
scrotum
Definition
the puch of skin of the external male genitals that encloses the testes
Term
testis
Definition
male gonad inside the scrotum that produces sperm and sex hormones
Term
spermatic cord
Definition
a cord attached to the testis that contains the vas deferens, blood vessels, nerves, and cremasteric muscle fibers
Term
seminiferous tubules
Definition
thin, coiled structures in the testes in which sperm are produced
Term
interstitial cells
Definition
cells located between the seminiferous tubules that are the major source of androgen in males
Term
epididymis
Definition
the structure along the back of each testis in which sperm maturation occurs
Term
vas deferens
Definition
a perm-carrying tube that begins at the testis and ends at the urethra
Term
vasectomy
Definition
male sterilization procedure that involves removing a section from each vas deferens
Term
ejaculatory ducts
Definition
two short ducts located within the prostate gland
Term
urethra
Definition
the tube through which urine passes from the bladder to the outside of the body
Term
seminal vesicles
Definition
small glands adjacent to the terminals of the vas deferens that secrete an alkaline fluid (conducive to sperm motility) that constitutes the greatest portion of the volum of seminal fluid released during ejaculation
Term
prostate gland
Definition
a gland located at the base of the bladder that produces about 30% of the seminal fluid released during ejaculation
Term
cowper's glands
Definition
two pea-sized glands located alongside the base of the urethra in the male that secrete an alkaline fluid during sexual arousal
Term
semen or seminal fluid
Definition
a viscous fluid ejaculated through the penis tat contains sperm and fluids from the prostate, seminal vesicles, and cowper's glands
Term
erection
Definition
the process by which the penis or clitoris engorges with blood and increases in size
Term
ejaculation
Definition
the process by which semen is expelled from the body through the penis
Term
emission plase
Definition
the first stage of male orgasm, in which the seminal fluid is gathered in the urethral bulb.
Term
expulsion phase
Definition
the second stage of male orgasm, druing which the semen is expelled from th penis by muscular contractions
Term
retrograde ejaculation
Definition
the process by which semen is expelled into the bladder instead of out of the penis
Term
nocturnal emission
Definition
involuntary ejaculation dring sleep; also known as a wet dream
Term
genital retraction syndrome (GRS)
Definition
unusual, culture-bound phenomenon in which a male believes his penis is shrinking and retracting into his body
Term
koro
Definition
a widely used term for the genital retraction syndrome
Term
circumcision
Definition
surgical removal of the foreskin of the penis
Term
phimosis
Definition
a condition characterized by an extremely tight penile foreskin
Term
urology
Definition
the medical specialty dealing with reproductive health and genital diseases of th male and urinary tract diseases in both sexes
Term
smegma
Definition
a cheesy substance of glandular secretions and skin cells that sometimes accumulates under th foreskin of the penis or hood of the clitoriss
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