1) Arousal
and erection
and erection
Thoughts,
sights, sounds, odours, and touch can act through sensory and parasympathetic
can act through sensory and parasympathetic nerve as sexual stimuli. In a male,
such stimuli can induce nervous impulses that allow the rate of blood flow into
the penis to increase while constricting the rate of blood flow out of the
penis.
sights, sounds, odours, and touch can act through sensory and parasympathetic
can act through sensory and parasympathetic nerve as sexual stimuli. In a male,
such stimuli can induce nervous impulses that allow the rate of blood flow into
the penis to increase while constricting the rate of blood flow out of the
penis.
As a result become engorged with blood causing the
penis to enlarge and stiffen. This reaction is an erection. As the erection
occurs, muscles of the Dartos contract causing the scrotum, the muscles lying
adjacent to the ductus deferens, also contracts, lifting the testes still. When
it is in this stage, the penis can serve as a copulatory organ.
penis to enlarge and stiffen. This reaction is an erection. As the erection
occurs, muscles of the Dartos contract causing the scrotum, the muscles lying
adjacent to the ductus deferens, also contracts, lifting the testes still. When
it is in this stage, the penis can serve as a copulatory organ.
2) Plateau:
Upon insertion of the penis into the vagina,
reactions are intensified and accompanied by flushed skin, increased blood
pressure and accelerated heart and respiratory rates. Semen moves into the
urethra from the ductus deferens and is mixed with prostatic and seminal
vesicle secretions. This period may last from a few seconds to several minutes,
depending on the individual and his physiological and psychological states of mind.
reactions are intensified and accompanied by flushed skin, increased blood
pressure and accelerated heart and respiratory rates. Semen moves into the
urethra from the ductus deferens and is mixed with prostatic and seminal
vesicle secretions. This period may last from a few seconds to several minutes,
depending on the individual and his physiological and psychological states of mind.
1) Orgasm and Ejaculation: As sexual excitement grows in the plateau
state, the skin becomes more flushed and B/P, respiratory rate and heart rate
increase further. Continued friction on the blood pressure and shaft of penis
from rhythmic pelvic thrusts transmits sensory stimuli to the CNS nerve. When a
threshold is reached, orgasm begins and can not be prevented voluntarily. In
both sexes orgasm is associated with widespread nervous and muscular reactions
and intense pleasure as the pent-up muscular contractions are suddenly
released.
state, the skin becomes more flushed and B/P, respiratory rate and heart rate
increase further. Continued friction on the blood pressure and shaft of penis
from rhythmic pelvic thrusts transmits sensory stimuli to the CNS nerve. When a
threshold is reached, orgasm begins and can not be prevented voluntarily. In
both sexes orgasm is associated with widespread nervous and muscular reactions
and intense pleasure as the pent-up muscular contractions are suddenly
released.
2) Resolution:
Orgasm in
both men and women is followed by a resolution phase, during which reactions
that occurred during the previous stages decline and the body returns to its
pre-arousal state. In a man, the penis loses its erection as muscles that
prevented blood from leaving it relax. During resolution, the same stimuli that
aroused him may lose their effect and the man may enter a REFRACTORY PERIOD during which greater stimulation is required for
arousal. The length of the refractory period depends on a number of factors,
including health, fatigue and psychological state.
both men and women is followed by a resolution phase, during which reactions
that occurred during the previous stages decline and the body returns to its
pre-arousal state. In a man, the penis loses its erection as muscles that
prevented blood from leaving it relax. During resolution, the same stimuli that
aroused him may lose their effect and the man may enter a REFRACTORY PERIOD during which greater stimulation is required for
arousal. The length of the refractory period depends on a number of factors,
including health, fatigue and psychological state.
Abnormalities
of male sexual function:
of male sexual function:
·
Loss of
Libido
Loss of
Libido
·
Hyper
libido
Hyper
libido
·
Impotence
Impotence
·
Frigidity
Frigidity
