(14) Female Genitalia Flashcards
mons pubis
hair covered fat pad overlying the symphysis pubis
labia majora
rounded folds of adipose tissue forming the outer lips of the vagina
labia minora
thinner pinkish-red folds or inner lips that extend anteriorly to form the prepuce
vestibule
boat-shaped fossa between th elbaia minora
introitus
vaginal opening (may be hidden by hymen in virgins)
perineum
tissue between the Introits and anus
urethral meatus
opens into vestibule between clitorus and vagina
paraurethral (Skene) glands
lie just posterior and adjacent to the meatus on either side of the openings
Bartholin glands
located posteriorly on both sides of the vaginal opening but not usually visible
vagina
musculomembranous tube extending upward and posteriorly between the urinary bladder and urethra and rectum
- its upper 3rd lies at a horizontal plane and terminates in the cup-shaped fornix
- vaginal mucosa lies in transverse folds or rugae
- lies at almost right angle to uterus
uterus
thick-walled fibromuscular structure shaped like an inverted pear
- convex upper surface is the uterine fundus
- body of uterus (corpus) and cylindrical cervix are joined inferiorly at the isthmus
3 layers of uterine wall
perimetric - serial coating from perineum
myometrium - distensible smooth muscle
endometrium - adherent inner coating
cervix
protrudes into vagina, diving the upper vagina into 3 recesses (anterior, posterior, lateral fornices)
ectocervix
vaginal surface of cervix
- seen easily w/ the help of a speculum
- at its center is round, oval, or slit-like depression(the external os of the cervix) which marks the opening into the endocervical canal
- covered by plushy red columnar epithelium that surrounds the os and lines the endocervical cancel, and by shiny pink squamous epithelium continuous with the vaginal lining
cervical puberty changes
- broad band of columnar epithelium encircling os (ectropion) is gradually replaced by squamous epithelium
- squamocolumnar junction migrates toward the os creating the transformation zone: this is the area at risk for dysplasia and tested by pap smear
Fallopian tube
has a fanlike tip (fimbria)
- extended from ovary to each side of the uterus and conducts oocyte from the periovarian peritoneal cavity to the uterine cavity
- normally not palpable
ovaries
almond shaped glands that vary considerably in size but aver approx 3.5x2x1.5cm from adulthood to menopause
-palpable on pelvic exam in 1/2 of women during reproductive years
adnexa
ovaries
tubes
supporting tissues
2 primary functions of ovaries
- production of oocytes
2. secretion of hormones (estrogen, progesterone, testosterone)
increased ovarian hormonal secretion at puberty causes:
growth of uterus and its endometrial lining
enlargement of vagina
thickening of epithelium
development of secondary sex characteristics (breasts, pubic hair)
parietal perineum
extends downward behind uterus into a cul-de-sac called rectouterine pouch (pouch of Douglas)
- can just reach on rectovaginal exam
greater pelvis
- protected by bony wings of ilia
- contains lower abdominal viscera, narrows inferiorly at lesser pelvis which surrounds the pelvic cavity and perineum
pelvic floor
supports pelvic organs
a long of tissue composed of muscle, ligaments, and end-pelvic fascia
helps support the pelvic organs above the outlet of the lesser pelvis
aid in sexual function (orgasm), urinary and fecal continence, stabilizing of connecting joints
consists of pelvic diaphragm and perineal membrane
pelvis diaphragm
separates the pelvic cavity from the perineum
consists of elevator ani and coccygeal muscles which attach to the inner surface of the lesser pelvis
perineal membrane
triangular sheet of fribromuscular tissue that contains the bulbocavernosus and ischiocarvernous muscles, the superficial transverse perineal body, and the external anal sphincter
spans the anterior triangle. that anchors the urethra, vagina, and perineal body to ischiopubic rami
urogenital (levator) hiatus
key-like opening in the center of the pelvic diaphragm where the urethra, vagina, and anorectic pass through
deep urogenital diaphragm
inferior to the pelvic diaphragm
includes the external urethral sphincter, urethra, supporting deep transverse perineal muscles (which runs from inferior ischium to the midline)
pelvic structures of posterior triangle
external and sphincter muscles that encircles the rectum and internal sphincter
pelvic diaphragm is innervated by ?
sacral nerve roots S3 to S5
perineal membrane and urogenital diaphragm are innervated by ?
pudendal nerve
weakness of pelvic floor muscles may cause:
pain
urinary incontinence
fecal incontinence
prolapse of pelvic organs that can produce a cystocele, rectocele, enterocoele
risk factors for pelvic floor weakness
advancing age
prior pelvic surgery or trauma
parity and childbirth
clinical: obesity, diabetes, MS, parkinsons
meds: anticholinergics, alpha-adrenergic blockers
chronically increased intra-abdominal pressure from COPD
chronic constipation
loss of urethral support contributes to ?
stress incontinence
weakness of the perineal body d/t childbirth predisposes to ?
rectoceles and enteroceles
pubic hair
spreads downward in triangular position, pointing toward vagina
- may form an inverted triangle pointing toward umbilicus (10%)
- growth not complete until mid 20s
- growth + breast development are main components of sexual maturity assessment in girls
leukorrhea
vaginal secretions
- increase just before menarche
- coincide with ovulation
- accompany sexual arousal
- must differentiate from cervical/vaginal infection discharge
lymph from vuvla and lower vagina drains into ?
lymph from internal genitalia (upper vagina) flows into ?
inguinal nodes
pelvic and abdominal lymph nodes (not palpable)
female genitalia: common/concerning symptoms
- menarche, menstruation, menopause, postmenopausal bleeding
- pregnancy
- vulvovaginal symptoms
- sexual health
- pelvic pain (acute/chronic)
- STIs
menarche
age at onset of menses
dysmenorrhea
pain w/ menses, often w bearing down, aching, or cramping sensation in lower abdomen or pelvis
premenstrual syndrome (PMS)
cluster of emotional, behavioral, and physical symptoms occurring 5 days before menses for 3 consecutive cycles
amenorrhea
absence of menses
abnormal uterine bleeding
bleeding between menses
includes infrequent, excessive, prolonged, or postmenopausal bleeding
menopause
absence of menses for 12 consecutive months, usually occurring between 48-55
postmenopausal bleeding
bleeding occurring 6 months or more after cessation of menses
onset of menstruation
9-16 y/o
- takes about 1 year to settle into regular pattern
- depends on genetics, socioeconomic status, nutrition
normal vs excessive menstrual blood
normal: dark red
excessive: bright red w/ “clots: (not true fibrin clots)
primary dysmenorrhea results from ?
increased prostaglandin production during luteal phase of menstrual cycle when estrogen and progesterone levels decline
causes of secondary dysmenorrhea?
endometriosis adenomyosis (endometriosis in muscular layers of uterus) PID endometrial polyps
criteria for PMS diagnosis
- signs and symptoms in the 5 days prior to menses for at least 3 consecutive cycles
- cessation of S/S within 4 days after onset of menses
- interference with daily activities
PMS symptoms & signs
emotional and behavioral symptoms: depress angry outbursts irritability anxiety confusion crying spells sleep disturbance poor concentration social withdrawal
bloating
weight gain
swelling of hands/feet
generalized aches/pains
primary amenorrhea
absence of ever having periods
secondary amenorrhea
& causes
cessation of periods after they have been established
- pregnancy
- lactation
- menopause
- low body weight (malnutrition, anorexia)
- stress
- chronic illness
- hypothalamic-pituitary-ovarian dysfunction
patterns of abnormal bleeding
- polymenorrhea (<21 days between menses)
- ogliomenorrhea (infrequent bleeding)
- menorrhagia (excessive flow)
- menorrhagia (intermenstrual bleeding)
- postcoital bleeding
postcoital bleeding suggests ?
cervical polyps of cancer
in older women: atrophic vaginitis
perimenopause symptoms
vasomotor symptoms: hot flashes, flushing, sweating
menopause changes
- ovaries stop producing estradiol or progesterone
- pituitary secretion of luteinizing hormonal and follicle-stimulating hormone gradually becomes markedly elevated
causes of postmenopausal bleeding
endometrial cancer
hormone replacement therapy
uterine/cervical polyps
Gravida
total number of pregnancies
Para
outcomes of pregnancies