SEXUALLYTRANSMITTED INFECTION
SEXUALINTERCOURSE
The term sexual intercourse usually refers to the act during
which the male’s penis is inserted into the female’svagina.
However, some people use the term more broadly to refer
to a much wider range ofsexual activity. Physiologically,
intercourse falls into four main stages - arousal (which
generally includes a period offoreplay), a plateau (during
which penetration usuallyoccurs), orgasm, and resolution
The duration of each stage of intercourse varies.
Arousal in men
Sexualthoughts, the
sight and feel of his
partner’s body, and
foreplaymaysexually
arouse a man. Blood
enters the penis so that
it becomes firm and erect.
Plateau phase in men
Vaginal penetration usually
takes place during this
phase and thrusting
movements begin. The
penis reaches maximum
size and the testes elevate.
Orgasm in men
Muscular contractions in
the ducts connecting the
testes, prostate, and
penis, force semen out of
the penis, accompanied
byintensely pleasurable
sensations.
Resolution in men
The penis returns to half
its fully erect size and
the testes descend.
Arousal in women
Similar factors lead to
arousal in women as in
men, though foreplay
maybe more important.
The clitoris lengthens,
the vagina enlarges,
and its walls secrete a
lubricating fluid.
Plateau phase in
women
Muscular contractions in
the walls ofthe vagina
help grip the penis. The
uterus rises, and the
clitoris may pull back
beneath its hood of skin.
Orgasm in women
The walls of the outer part
ofthe vagina contract
rhythmically and strongly
several times and an
intense sensual feeling
spreads from the clitoris
and throughout the body.
Resolution in women
The clitoris subsides
and, more gradually,
the vagina relaxes
and the uterus falls.
S
t h e o p p o s i t e s e x ;
h o m o s e x u a lit y
i s a t t r a c -
t i o n t o t h e s a m e s e x ; a n d
b is e x u a lit y
i s
a t t r a c t i o n t o b o t h s e x e s .
s e x u a lly tra n s m itte d in fe c tio n
A n i n f e c t i o n t r a n s m i t t e d p r i m a r i l y ( b u t
n o t e x c l u s i v e l y )
b y s e x u a l i n t e r c o u r s e .
C o m m o n s e x u a l l y t r a n s m i t t e d i n f e c t i o n s
( S T I s )
i n c l u d e
g e n it a l h e rp e s , c h la m y d ia l
in fe c tio n s, p u b ic lice , g e n it a l w a rts, tric h o m o -
n ia s is , g o n o rrh o e a ,
a n d
H IV
i n f e c t i o n .
C e r t a i n s e x u a l a c t i v i t i e s c a r r y a h i g h
r i s k o f i n f e c t i o n w i t h S T I s . T h e y i n c l u d e
c a s u a l s e x o r h a v i n g m u l t i p l e p a r t n e r s
( p a r t i c u l a r l y i f p a r t n e r s a r e n o t k n o w n
t o b e f r e e o f d i s e a s e ) ; a c t i v i t i e s t h a t i n -
v o l v e c o n t a c t w i t h s p e r m o r o t h e r b o d y
f l u i d s ;
a n d a c t i v i t i e s t h a t m a y
d a m a g e
t h e s k i n o r m u c o u s m e m b r a n e s . P r a c t i s -
i n g
s a f e r s e x
c a n m i n i m i z e t h e s e r i s k s
a n d h e l p p r e v e n t S T I s .
A n t ib io t ic s
c a n b e u s e d t o t r e a t m o s t
b a c t e r i a l S T I s .
C o n f i d e n t i a l t r a c i n g a n d
t r e a t m e n t o f a n a f f e c t e d p e r s o n ’s p a r t -
n e r s i s e s s e n t i a l i n t h e m a n a g e m e n t o f
S T I s ( s e e
c o n ta c t t ra c in g ).
s e x u a l p ro b le m s
A n y
d i f f i c u l t y
a s s o c i a t e d
w i t h
s e x u a l
p e r f o r m a n c e o r b e h a v i o u r . S e x u a l p r o b -
l e m s a r e o f t e n p s y c h o l o g i c a l i n o r i g i n ;
s e x t h e ra p y
m a y
h e l p
s u c h
p r o b l e m s .
T h e y m a y a l s o b e d u e t o p h y s i c a l d i s -
e a s e , s u c h a s a d i s o r d e r a f f e c t i n g b l o o d
f l o w ; a h o r m o n a l d y s f u n c t i o n ; o r a d i s -
o r d e r o f t h e g e n i t a l s . S u c h p r o b l e m s a r e
a d d r e s s e d b y t r e a t i n g t h e c a u s e , w h e r e
p o s s i b l e . S e e a l s o
e ja c u la t io n , d is o r d e r s of;
im p o t e n c e ; o rg a s m , la c k o f; s e x u a l d e s ire ,
in h ib it e d ; v a g in is m u s .
S e z a ry s y n d ro m e
A r a r e c o n d i t i o n i n w h i c h t h e r e i s a n
a b n o r m a l
o v e r g r o w t h
o f
ly m p h o c y te s
( w h i t e b l o o d c e l l s a c t i v e i n t h e i m m u n e
s y s t e m )
i n t h e s k i n ,
l i v e r ,
s p l e e n ,
a n d
l y m p h n o d e s . I t m a i n l y a f f e c t s m i d d l e -
a g e d
a n d
e l d e r l y
p e o p l e .
T h e
f i r s t
s y m p t o m i s t h e a p p e a r a n c e o f r e d , s c a l y
p a t c h e s o n t h e s k i n t h a t s p r e a d t o f o r m
a n i t c h y , f l a k i n g r a s h . T h e r e m a y a l s o b e
a n a c c u m u l a t i o n o f f l u i d u n d e r t h e s k i n ;
b a l d n e s s ;
a n d
d i s t o r t e d
n a i l
g r o w t h .
S e z a r y s y n d r o m e i s s o m e t i m e s a s s o c i a t -
e d w i t h
le u k a e m ia .
T r e a t m e n t
i n c l u d e s
a n tic a n c e r d ru g s
a n d
ra d io th e ra p y
.
s h a re d c a re
M
a n a g e m e n t
o f
a
p r e g n a n t
w o m
a n ’s
c a r e b y h e r g e n e r a l p r a c t i t i o n e r a n d t h e
c o m m u n i t y m i d w i v e s ( s e e
p rim a ry c a re ),
i n
c o m b i n a t i o n
w i t h
a
h o s p i t a l
a n t e -
n a t a l t e a m . T h e t e r m s h a r e d c a r e a l s o r e -
f e r s i n c r e a s i n g l y t o t h e m a n a g e m e n t o f
c e r t a i n c h r o n i c c o n d i t i o n s , f o r e x a m p l e
a s t h m a a n d d i a b e t e s .
S h e e h a n ’s s y n d ro m e
A f o r m o f h y p o p i t u i t a r i s m ( u n d e r - a c t i v i -
t y o f t h e p i t u i t a r y g l a n d ) i n w o m e n w h o
h a v e j u s t g i v e n b i r t h . T h e d i s o r d e r o c c u r s
w h e n c e l l s i n t h e p i t u i t a r y d i e a s a r e s u l t
o f h e a v y b l e e d i n g o r
s h o c k
d u r i n g t h e
d e l i v e r y .
T h e
t r e a t m e n t
f o r
S h e e h a n ’s
s y n d r o m e i n v o l v e s r e p l a c e m e n t o f t h e
d e f i c i e n t h o r m o n e s .
s h e llfis h p o is o n in g
S e e
s e a fo o d p o is o n in g .
686
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