Download - reproductive system(Female)
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FEMALE REPRODUCTIVE ANATOMY
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EXTERNAL GENTILIA
• The vulva refers to those parts that are outwardly visible
• The vulva includes:• Mons pubis• Labia majora• Labia minora• Clitoris• Urethral opening• Vaginal opening• Perineum
• Individual differences in:
• Size• Coloration• Shape • Of external gentalia
are common
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MONS PUBIS
The triangular mound of fatty tissue that covers the pubic bone
It protects the pubic symphysisDuring adolescence sex hormones trigger
the growth of pubic hair on the mons pubis
Hair varies in coarseness curliness, amount, color and thickness
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LABIA MAJORA
Referred to as the outer lipsThey have a darker pigmentationThe Labia Majora: Protect the introitus and urethral openingsAre covered with hair and sebaceous
glandsTend to be smooth, moist, and hairlessBecome flaccid with age and after
childbirth
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LABIA MINORA
Referred to as the “inner lips”Made up of erectile, connective tissue that
darkens and swells during sexual arousalLocated inside the labia majoraThey are more sensitive and responsive to
touch than the labia majoraThe labia minora tightens during
intercourse
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CLITORIS
• Highly sensitive organ composed of nerves, blood vessels, and erectile tissue
• Located under the prepuce• It is made up of a shaft and a glans • Becomes engorged with blood during
sexual stimulation• Key to sexual pleasure for most women• Urethral opening is located directly
below clitoris
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VAGINAL OPENINGINTROITUS
Opening may be covered by a thin sheath called the hymen
Using the presence of an intact hymen for determining virginity is erroneous
Some women are born without hymensThe hymen can be perforated by many
different events
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PERINEUM
• The muscle and tissue located between the vaginal opening and anal canal
• It supports and surrounds the lower parts of the urinary and digestive tracts
• The perinium contains an abundance of nerve endings that make it sensitive to touch
• An episiotomy is an incision of the perinium used during childbirth for widening the vaginal opening
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INTERNAL GENITALIA
The internal genitalia consists of the:VaginaCervixUterusFallopian TubesOvaries
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VAGINA
The vagina connects the cervix to the external genitals
It is located between the bladder and rectumIt functions :As a passageway for the menstrual flowFor uterine secretions to pass down through the
introitusAs the birth canal during laborWith the help of two Bartholin’s glands becomes
lubricated during SI
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CERVIX
The cervix connects the uterus to the vagina
The cervical opening to the vagina is small
This acts as a safety precaution against foreign bodies entering the uterus
During childbirth, the cervix dilates to accommodate the passage of the fetus
This dilation is a sign that labor has begun
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UTERUS
Commonly referred to as the wombA pear shaped organ about the size of a clenched
fistIt is made up of the endometrium, myometrium
and perimetriumConsists of blood-enriched tissue that sloughs off
each month during menstrual cycleThe powerful muscles of the uterus expand to
accommodate a growing fetus and push it through the birth canal
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FALLOPIAN TUBES
Serve as a pathway for the ovum to the uterus
Are the site of fertilization by the male sperm
Often referred to as the oviducts or uterine tubes
Fertilized egg takes approximately 6 to 10 days to travel through the fallopian tube to implant in the uterine lining
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OVARIES
The female gonads or sex glands They develop and expel an ovum each monthA woman is born with approximately 400,000
immature eggs called folliclesDuring a lifetime a woman release @ 400 to 500
fully matured eggs for fertilizationThe follicles in the ovaries produce the female
sex hormones, progesterone and estrogenThese hormones prepare the uterus for
implantation of the fertilized egg
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BREASTS
• Organs of sexual arousal• Contain mammary glands• Consist of connective tissue
that serves as support• Each breast contain 15-25
clusters called lobes• Each lobule is connected by
ducts that open into the nipples
• The nipples are made up of erectile tissue
• The pigmented around the nipples are called the areola
• Breast size is determined primarily by heredity
• Size also depends on the existing fat and glandular tissue
• Breasts may exhibit cyclical changes, including increased swelling and tenderness prior to menstruation
• Benign breast changes refer to fibrocystic disease
• Lumps or masses that are noncancerous
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MENSTRUATION
• Menarch, the onset of menstruation signals the bodily changes that transform a female body
• Average age is 12.8• Amount of bleeding
varies from woman to woman
• Expulsion of blood clots
• Blood color can vary from bright red to dark maroon
• Usually occurs every 25 to 32 days
• Women can experience fluid retention, cramping, mood swings, weight gain, breast tenderness, diarrhea, and constipation
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SEX HORMONES
• Follicle stimulating hormone FHS-
• Luteinizing hormone LH-signals ovulation
• Estrogen- produced throughout the menstrual cycle
• Progesterone-produced during second half of cycle
• Contributes to thickening of the endometrium which is shed during menstrual phase if fertilization does not take place
• Both FHS and LH are produced in the pituitary gland
• Both estrogen and progesterone are produced by the follicles in the ovaries