Male Reproductive
System
· Reproductive Anatomy of the Human Male.· External:
- penis - scrotum
· Internal: - gonads- accessory sex glands and ducts.
Human reproduction involves intricate anatomy and complex behavior
Male Reproductive System
External structure of the penis:
· glans penis
· prepuce (foreskin)
· There is no verifiable health benefit to circumcision.
Circumcision
foreskin glans penis urethral opening
suturesshaft
corona
· The penis is composed of three layers of spongy erectile tissue.· During sexual arousal the erectile tissue fills
with blood from arteries.· The resultant increased pressure seals off the
veins that drain the penis.
· The engorgement of the penis with blood causes an erection.
· Testes are the male gonads.· seminiferous tubules- form sperm
· Testes are located in the scrotum, outside the body cavity.· This keeps testicular temperature cooler
than the body cavity.· The testes develop in the body cavity and
descend into the scrotum just before birth.
· Sperm Pathway
Semen· Seminal fluid is thick, yellowish, and
alkaline.· It contains mucus, fructose, a coagulating
enzyme.
· Accessory glands:
1.seminal vesicle
2.prostate gland
Seminal Vesicle
Seminal vesicle:• A pair of glands that secrete a liquid
component of semen into the vas deferens. • Secretion is alkaline• Contains fructose,, coagulating enzyme,
Prostate gland:• Location- surrounds and opens into the urethra where it
leaves the bladder. • Secretion- slightly alkaline fluid that activates the sperm
and prevents them from sticking together· Prostate problems are common in males over 40.· Prostate cancer is one of the most common cancers
in men.
Prostate
· Ejaculation propels sperm from the epididymis to the vas deferens.· The vas deferens run from the scrotum and
behind the urinary bladder.
· Here each vas deferens joins with a duct from the seminal vesicle to form an ejaculatory duct.
· The ejaculatory ducts open into the urethra.· The urethra drains both the excretory and
reproductive systems.
Ejaculation
Female Reproductive System
cervix
vagina
Fallopian tube
ovary
uterus
bladder
urethra
clitoris
Female Reproductive System
Internal reproductive:
• Vagina• Cervix• Fallopian tube
(oviducts)• Ovary• Uterus
cervixvagina
Fallopian tube
ovary
uterus
Vagina:• Where the sperm from the male is deposited.• Connects the inner reproductive organs to the
outside of the body.• Where a baby exits the mother body.
• During this time the vagina is often called the birth canal.
Ovary:• A pair of organs that produce the female
reproductive cells (ova)
Fallopian Tubes:• Thin tubes that connect the ovaries to the
uterus.• Where the sperm and ova meet during
reproduction.
Fimbrae & Fallopian Tube
Uterus:• Where a fetus develops if an ova is
successfully fertilized. • Lining of the uterus changes throughout the
menstrual cycle.• The lining thickens in preparation for a
fertilized ova.• If no ova is fertilized then the lining is shed
during menstruation (the period)
Cervix:• Like the gateway between the interior and
exterior reproductive organs.• The cervix allows some sperm to enter the
uterus but expels many more.• During birth the cervix expands to allow the
baby to leave the mother body.
The Uterine Cycle
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