Part III: Female Internal Genital Organs Pg 103-108 Flashcards
distensible tube extending from uterine cervix to vestibule of vagina
Vagina
The cleft between Labia Minora
Vestibule of the vagina
The walls of the vagina are normally collapsed except where?
Superiorly where the cervix holds the walls apart
The superior recess surrounding uterine cervix
Vaginal fornix
The vaginal fornix is divided into anterior, lateral and posterior regions. The posterior region is the deepest part and associated with _______
Rectouterine pouch
Four muscles compress the vagina and act like a sphincter:
- Pubovaginalis M
- External urethral sphincter
- Urethrovaginal sphincter
- Bulbospongiosus M
This will not be tested but interesting
What are the functions of the vagina?
- Excretory duct for menstrual fluid
- Receive penis and semen during sexual intercourse
- Inferior portion of birth canal
What is the arterial supply to the superior vagina?
Uterine artery
What is the arterial supply to the middle vagina?
Vaginal A
What is the arterial supply to the inferior vagina?
Internal pudendal A
Venous drainage of the vagina is via:
Internal iliac V
Lymphatic drainage of superior vagina is via:
Internal/external iliac lymph nodes
Lymphatic drainage of middle vagina is via:
Internal iliac lymph nodes
Lymphatic drainage of inferior vagina is via:
Sacral, common iliac and superficial inguinal lymph nodes
__________ travels with Uterine A to innervate superior 80% of the vagina
Uterovaginal plexus
Uterovaginal plexus is an extension of .
inferior hypogastric plexus
Sympathetic innervation of the vagina is via:
Lumbar splanchnic N
Parasympathetic innervation to the vagina is via:
Pelvic splanchnic N (S2-S4)
Visceral afferents from the vagina accompany pelvic splanchnic N back to ______ dermatomes
S2-S4
NOTE: Responsive only to distension in upper 80% of vagina
Somatic innervation to the vagina is via:
Deep Perineal N (branch of Pudendal N)
NOTE: Only to lower 20% of vagina. Responsive to touch and temperature
Thick walled, pear shaped muscular organ of gestation located in lesser pelvis
Uterus
Freely movable superior two thirds of uterus
Body
narrow, slit like lumen in the body of the uterus
Uterine cavity
superolateral origins of uterine tubes found in the body of the uterus
Uterine horns
rounded part of the uterine body superior to uterine horns
Fundus
short, constricted region of the body of the uterus just superior to cervix
Isthmus
Cylindrical inferior portion of uterus protruding into vagina
Cervix
The part of the cervix between isthmus and vagina, separated from rectum posteriorly by rectouterine pouch
Supravaginal part of cervix
The part of cervix that protrudes into vagina and surrounded by vaginal fornix
Vaginal part of the cervix
internal opening to uterine cavity of isthmus in the vaginal part of the cervix
Internal os
External opening to the vagina in the vaginal part of the cervix
External os
Structure that spans the cervix from internal os to external os in the vaginal part of the cervix
Cervical canal
Adult uterus is ______ (relative to vagina) and ______ (relative to cervix)
- anteverted
- anteflexed
Uterine body normally lies on, and is supported by, _______
urinary bladder
When does the uterine position change?
as urinary bladder and/or rectum fill
Thin outer serosal covering of the uterus
Perimetrium
Thickest layer of the uterus that is comprised of irregularly arranged smooth muscle
Myometrium
NOTE: Changes dramatically during pregnancy (but not so during menstrual cycles)
Thin mucosal lining of the uterus; site of blastocyst implantation
Endometrium
NOTE: Changes dramatically during each menstrual cycle
Double layer of peritoneum that helps hold uterus in place and extends from lateral walls of uterus to lateral walls and floor of pelvis
Broad L of uterus
Anterior lamina of the broad L of uterus borders ________.
vesicouterine pouch
Posterior lamina of the broad L of uterus borders ________.
Rectouterine pouch
The anterior and posterior laminae of the uterus are continuous with each other over the free edge of ______
Uterine tubes
What forms a transverse septum in pelvic cavity?
Broad ligament of the uterus
Large section of Broad L lateral to uterus
Mesometrium
Extension of Broad L forming mesentery of ovary
Mesovarium
Extension of Broad L forming mesentery of uterine tube
Mesosalpinx
Round ligament of the uterus and the ovarian ligament have a uterine origin between:
Layers of the broad ligament of the uterus
The round ligament of the uterus attaches anteroinferiorly to :
Uterotubal junction
The round ligament of the uterus passes through _______ to insert into _______
- Inguinal canal
- labia majora
The round ligament of the uterus is an adult remnant what?
Inferior part of gubernaculum
The ligament that spans from uterus to ovary
Ovarian L
The ovarian ligament of the uterus is an adult remnant of what?
Superior part of gubernaculum
What is the superior extension of the broad ligament of the uterus toward abdomen?
Suspensory Ligament of the ovary
What Surrounds neurovascular elements supplying ovary?
Suspensory Ligament of the ovary
What ligament extends from cervix and lateral fornix of vagina to lateral walls of pelvis
Cardinal ligament
Where is the cardinal ligament located relative to the broad ligament?
Along inferior margins of broad Ligament of the uterus
What ligament passes superoposteriorly from sides of cervix to middle of sacrum?
Uterosacral L
Tension from what ligament is possibly responsible for anteversion of uterus?
Uterosacral ligament
What ligament of the uterus is part of the tendinous arch of the pelvic fascia?
Uterosacral L
What ligament of the uterus is palpable via digital rectal exam?
Uterosacral ligament
What ligament extends from posterior surface of pubic bones to cervix?
Pubocervical ligament
What is the function of the uterine ligaments?
Uterine position is maintained by these ligaments and support from pelvic diaphragm
Uterine prolapse is inhibited by what?
by position of uterus overlying urinary bladder
NOTE: Prolapse would be more likely if uterus were in same vertical plane as vagina
The uterus is associated anteriorly with:
- vesicouterine pouch
- superior surface of urinary bladder
The uterus is associated posteriorly with:
- rectouterine pouch
- anterior surface of rectum
Rectouterine pouch is a potential space but sometimes may be filled with:
Ileum
The uterus is anchored to the pelvic wall laterally by:
- broad ligament of the uterus
- cardinal ligament
What is the arterial supply of the uterus?
Uterine A, a branch from internal iliac A
NOTE: Ovarian A and Vaginal A anastomose with Uterine A
What is the venous drainage of the uterus?
Uterine venous plexus which then drains to internal iliac V
Lymphatic drainage of the fundus of the uterus:
Lumbar lymph nodes
Lymphatic drainage of the body of the uterus:
through Broad L to external iliac lymph nodes
Lymphatic drainage of the cervix of the uterus:
either internal iliac or sacral lymph nodes
The uterovaginal plexus is an extension of:
Inferior hypogastric plexus
Sympathetic innervation of the uterus is via:
Lumbar splanchnic N
Parasympathetic innervation of the uterus via:
Pelvic splanchnic N (S2-S4)
Visceral afferents from the body/fundus of the uterus follow:
sympathetics via lumbar splanchnic N
Visceral afferents from the cervix follow:
parasympathetics via pelvic splanchnic N
What is the function of the uterine tubes?
- Convey ovulated ovum to uterus
- Normal site for fertilization
- Blastocyst formation after successful fertilization
Uterine tubes extend laterally from”
Uterine horns
The uterine tubes are located in:
Mesosalpinx
The uterine tubes open to peritoneal cavity near:
Ovaries
Funnel shaped distal end of the uterine tubes adjacent to ovary
Infundibulum
opening of the infundibulum of the uterine tubes to peritoneal cavity
Abdominal ostium
inflammation often resulting in uterine tube blockage - Major cause of female infertility
Salpingitis
finger-like fringe processes of the infundibulum of the uterine tubes which associate with ovary
Fimbriae
Widest and longest distal two thirds of the uterine tube between infundibulum and isthmus
Ampulla
What is the usually site for fertilization?
Ampulla
Narrow, thick walled part of the uterine tubes adjacent to uterine horn
Isthmus
Short section of the uterine tubes that passes through wall of uterus
Intramural segment
The opening of the uterine tube to the uterine cavity
Uterine ostium
What is the arterial supply to the uterine tubes?
- Uterine A from internal iliac A
- ovarian A from abdominal aorta
What is the venous drainage of the uterine tubes?
- Uterine venous plexus drains to Internal Iliac V
- Ovarian V drains to IVC or L Renal V
Lymphatic drainage of uterine tubes is via:
Lumbar lymph nodes
Autonomic innervation of the uterine tubes is via:
Inferior hypogastric plexus
Visceral afferents from the uterine tubes follow:
sympathetics via lumbar splanchnic N to T11-L1
Small almond shaped glands that produce female gametes and sex hormones
Ovaries
The ovaries are suspended by ______ of the broad ligament near lateral pelvic walls
Mesovarium
Prepubertal ovaries are covered by:
smooth germinal epithelium
NOTE: Postpubertal ovaries become progressively distorted and scarred from ovulations
Ovulation releases oocyte directly to _______. The _______ of the uterine tube captures oocyte and brings it into ampulla
- peritoneal cavity
- infundibulum
What connects distal end of ovary to lateral wall of pelvis?
Suspensory Ligament
What contains ovarian blood vessels, lymphatics and nerves?
Suspensory ligament
What connects proximal end of ovary to uterus?
Ovarian ligament
The ovarian ligament is located within:
Mesovarium
What is the arterial supply to the ovary?
Ovarian A which originates from abdominal aorta
What is the venous drainage of the ovaries?
Pampiniform plexus which drains to a single ovarian vein
Where does the pampiniform plexus form in females?
In broad ligament near ovary and uterine tube
The right ovarian vein drains to:
IVC
The left ovarian vein drains to:
Left renal vein
Lymphatic drainage of the ovaries is via:
Lumbar lymph nodes
Autonomic innervation of the ovary is via:
Ovarian plexus which follows the ovarian A
Sympathetic innervation of the ovaries is via:
T11-L1
Parasympathetic innervation of the ovaries is via:
Pelvic splanchnic N
What is the function of parasympathetic and my pathetic innervation to the ovary?
Regulate vascular diameter