包皮到底有什么用？# NextGeneration - 我爱宝宝
c*i
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The foreskin has numerous protective, sensory, and sexual functions.
· Protection: Just as the eyelids protect the eyes, the foreskin protects
the glans and keeps its surface soft, moist, and sensitive. It also
maintains optimal warmth, pH balance, and cleanliness. The glans itself
contains no sebaceous glands-glands that produce the sebum, or oil, that
moisturizes our skin.11 The foreskin produces the sebum that maintains
proper health of the surface of the glans.
· Immunological Defense: The mucous membranes that line all body orifices
are the body's first line of immunological defense. Glands in the foreskin
produce antibacterial and antiviral proteins such as lysozyme.12 Lysozyme is
also found in tears and mother's milk. Specialized epithelial Langerhans
cells, an immune system component, abound in the foreskin's outer surface.13
Plasma cells in the foreskin's mucosal lining secrete immunoglobulins,
antibodies that defend against infection.14
· Erogenous Sensitivity: The foreskin is as sensitive as the fingertips or
the lips of the mouth. It contains a richer variety and greater
concentration of specialized nerve receptors than any other part of the
penis.15 These specialized nerve endings can discern motion, subtle changes
in temperature, and fine gradations of texture.16, 17, 18, 19, 20, 21, 22,
23
· Coverage During Erection: As it becomes erect, the penile shaft becomes
thicker and longer. The double-layered foreskin provides the skin necessary
to accommodate the expanded organ and to allow the penile skin to glide
freely, smoothly, and pleasurably over the shaft and glans.
· Self-Stimulating Sexual Functions: The foreskin's double-layered sheath
enables the penile shaft skin to glide back and forth over the penile shaft.
The foreskin can normally be slipped all the way, or almost all the way,
back to the base of the penis, and also slipped forward beyond the glans.
This wide range of motion is the mechanism by which the penis and the
orgasmic triggers in the foreskin, frenulum, and glans are stimulated.
· Sexual Functions in Intercourse: One of the foreskin's functions is to
facilitate smooth, gentle movement between the mucosal surfaces of the two
partners during intercourse. The foreskin enables the penis to slip in and
out of the vagina nonabrasively inside its own slick sheath of self-
lubricating, movable skin. The female is thus stimulated by moving pressure
rather than by friction only, as when the male's foreskin is missing.
· The foreskin fosters intimacy between the two partners by enveloping the
glans and maintaining it as an internal organ. The sexual experience is
enhanced when the foreskin slips back to allow the male's internal organ,
the glans, to meet the female's internal organ, the cervix-a moment of
supreme intimacy and beauty.
http://www.mothering.com/community/t/112410/if-you-regret-circu
· Protection: Just as the eyelids protect the eyes, the foreskin protects
the glans and keeps its surface soft, moist, and sensitive. It also
maintains optimal warmth, pH balance, and cleanliness. The glans itself
contains no sebaceous glands-glands that produce the sebum, or oil, that
moisturizes our skin.11 The foreskin produces the sebum that maintains
proper health of the surface of the glans.
· Immunological Defense: The mucous membranes that line all body orifices
are the body's first line of immunological defense. Glands in the foreskin
produce antibacterial and antiviral proteins such as lysozyme.12 Lysozyme is
also found in tears and mother's milk. Specialized epithelial Langerhans
cells, an immune system component, abound in the foreskin's outer surface.13
Plasma cells in the foreskin's mucosal lining secrete immunoglobulins,
antibodies that defend against infection.14
· Erogenous Sensitivity: The foreskin is as sensitive as the fingertips or
the lips of the mouth. It contains a richer variety and greater
concentration of specialized nerve receptors than any other part of the
penis.15 These specialized nerve endings can discern motion, subtle changes
in temperature, and fine gradations of texture.16, 17, 18, 19, 20, 21, 22,
23
· Coverage During Erection: As it becomes erect, the penile shaft becomes
thicker and longer. The double-layered foreskin provides the skin necessary
to accommodate the expanded organ and to allow the penile skin to glide
freely, smoothly, and pleasurably over the shaft and glans.
· Self-Stimulating Sexual Functions: The foreskin's double-layered sheath
enables the penile shaft skin to glide back and forth over the penile shaft.
The foreskin can normally be slipped all the way, or almost all the way,
back to the base of the penis, and also slipped forward beyond the glans.
This wide range of motion is the mechanism by which the penis and the
orgasmic triggers in the foreskin, frenulum, and glans are stimulated.
· Sexual Functions in Intercourse: One of the foreskin's functions is to
facilitate smooth, gentle movement between the mucosal surfaces of the two
partners during intercourse. The foreskin enables the penis to slip in and
out of the vagina nonabrasively inside its own slick sheath of self-
lubricating, movable skin. The female is thus stimulated by moving pressure
rather than by friction only, as when the male's foreskin is missing.
· The foreskin fosters intimacy between the two partners by enveloping the
glans and maintaining it as an internal organ. The sexual experience is
enhanced when the foreskin slips back to allow the male's internal organ,
the glans, to meet the female's internal organ, the cervix-a moment of
supreme intimacy and beauty.
http://www.mothering.com/community/t/112410/if-you-regret-circu