female reproductive system inferior genital tract Flashcards
what is the vagina?
Unpaired hollow organ, fibromuscular canal, copulatory organ, birth canal during delivery.
what is the location and trajectory of the vagina?
From pelvic cavity through pelvic floor into perineum, from roof (vaginal vault)
runs inferiorly + anteriorly.
Forms right angle with uterus
Travels through pelvic floor (levator ani and urogenital triangle)
opens into vestibule, between labia minora of vulva.
What is the specificity of the angle it forms with the uterus?
angle varies with vesical + rectal movements
larger (obtuse) in nulliparas // smaller (acute) in multiparas
Wht are the relations of the vagina?
Ant: base of bladder (sup) urethra (inf)
Post: rectum + rectouterine pouch
((Sup. 1/4: covered by peritoneum
Inf. 1/4: surrounded by muscles, and fascia of the perineal body ))
Lat: levator ani muscle + pelvic fascia
Inf: opens with sagittal orifice posterior to urethral external orifice in vestibule.
What does the vaginal vault do?
surrounds vaginal portion of cervix forming annular recess
What is the annular recess formed by the vaginal vault ?
anterior + posterior fornix
What is the erectile structure of the female reproductive system?
clitoral bulbs: aggregations of erectile tissue in internal part of the clitoris. Can also be found throughout vestibule.
What are the lymphatics draining the external genitalia of females?
Superficial and deep inguinal nodes
Which veins drain the female external genitalia?
External pudendal veins drain from into great saphenous vein –>Superficial vulvar structures
Deep dorsal veins drain into internal pudendal vein + Superficial dorsal veins drain into external pudendal vein and great saphenous vein –>Clitoris
Which arteries irrigate the female external genitalia?
Internal pudendal artery (from internal iliac artery) + External pudendal artery (from femoral artery)
What does the femal external genitalia consist of?
Mons pubis, Labia majora, Labia minora, Clitoris, Vestibule, Bulbs of vestibule, Greater vestibular glands
Where does the Superficial perineal pouch lie?
Lies between perineal membrane + membranous layer of superficial fascia (Colle’s fascia) of perineum
What does the superficial perineal pouch contain?
Bulbs of vestibule (on each side of vaginal opening), Crura of clitoris, Superficial perineal muscles (Superficial transversus perineal muscle, Ischiocavernosus, Bulbospongiosus), Greater vestibular glands
What is the Urogenital triangle?
Anterior half of perineum, contains the root of external genitalia and the orifices of the urogenital systems
What are the boundaries of the urogenital triangle ?
Lat. ischiopubic rami
Post. imaginary line between ischial tuberosities
Ant. inferior margin of pubic symphysis
Roof: levator ani
Floor: perineal membrane and deep perineal pouch