Scrotum
The sac of skin that surrounds the
testicles. |
Semen
The fluid containing sperm (the male
reproductive cells) that is expelled (ejaculatzed)
through the end of the penis when the man
reaches sexual climax (orgasm). |
Seminal
vesicles
The sac-like pouches that attach to the
vas deferens near the base of the urinary
bladder. The seminal vesicles produce a
sugar-rich fluid called fructose that provides
sperm with a source of energy that helps
sperm move. The fluid of the seminal vesicles
makes up most of the volume of a man's ejaculatory
fluid, or ejaculate. |
Seminal
fluid
The thick white fluid mainly produced
by the prostate and seminal vesicles containing
sperm that is ejaculated by the penis. |
Sertoli
cells
A testicular cell responsible for
nurturing the spermatids (immature sperm). |
Sexual
dysfunction
This refers to a problem during any phase
of the sexual response cycle that prevents
the individual or couple from experiencing
satisfaction from the sexual activity. |
Sexual
masochism
A disorder in which a person uses
sexual fantasies, urges or behaviors involving
the act (real, not simulated) of being humiliated,
beaten or otherwise made to suffer in order
to achieve sexual excitement and climax. |
Serial
monogamy
The concept of having multiple sexual
partners over a lifetime, in a sequence
of committed relationships. |
Sexual
orientation
A term used to refer to a person’s
emotional, romantic and sexual attraction
to individuals of a particular gender (male
or female). |
Sexual
response cycle
The sequence of physical and emotional
changes that occur as a person becomes sexually
aroused and participates in sexually stimulating
activities, including intercourse and masturbation.
The sexual response cycle has four phases:
excitement, plateau, orgasm and resolution. |
Sexual
sadism
A disorder in which a person has
persistent fantasies in which sexual excitement
results from inflicting psychological or
physical suffering (including humiliation
and terror) on a sexual partner. |
Sex
therapist
A professional counselor for people
with sexual disorders. |
Sex
therapy
Counseling for sexual disorders. |
Sex-hormone
binding globulin
A protein produced by the liver that
binds testosterone and estradiol in the
plasma. |
Shaft
of the penis
The long, slender cylinders of tissue
inside the penis that contain spongy tissue
and expand to produce erections. |
Sildenafil
(Viagra)
A medication used to treat erectile
dysfunction that works by increasing the
flow of blood into the penis. |
Sodomy
One of a list of sexual activities
other than penile-vaginal intercourse that
is criminalized within a political jurisdiction. |
Swinging
In a sexual sense, the sharing of
sexual partners between two or more committed
couples. |
Speculum
An instrument used to spread the
vagina open so that the cervix can be seen. |
Sperm
The male reproductive cells. |
Sperm
morphology
A semen analysis factor that indicates
the number or percentage of sperm in the
sample that appear to have been formed normally. |
Sperm
Motility
The ability of sperm to swim. Poor
motility means the sperm have a difficult
time swimming toward their goal - the egg. |
Sperm
retrieval
The doctor removes sperm from a man's
reproductive tract (testis or epididymis)
using a fine needle, biopsy gun, or other
instrument. |
Spermatids
Immature sperm. |
Spermatocele
A spermatocele is (usually) a small
cavity, filled with watery liquid, in the
epididymis. |
Spermatogenesis
Production of sperm in the testes. |
Spermaturia
Spermaturia is the release of sperm
into the urine. This does occur and can
be noted in men with long periods of continence. |
Spermicide
Foams, jellies, tablets or suppositories
that a woman places in her vagina and up
next to the cervix (the opening leading
from the vagina to the womb) before sex
to prevent pregnancy. Spermicides block
the cervix and paralyze the sperm, making
them unable to travel into the womb. |
STD
(Sexually Transmitted Disease)
Any infection that is acquired through
sexual contact in a substantial number of
cases. |
STI
(Sexually Transmitted Infection)
Any infection that is acquired through
sexual contact in a substantial number of
cases. |
Suppository
A type of medication designed to
melt at body temperature within a body cavity
other than the mouth. |
