Uterus Flashcards
Is the uterus a primary or secondary sex organ?
Secondary
What are the three parts of the uterus?
Fundus, body, cervix
The exact anatomical location of the uterus varies with the degree of distension of the ______
Bladder
The uterus can be described as anteverted with respect to the vagina, and anteflexed with respect to the _____
cervix
Uterus normally lies posterosuperior to the _____
Bladder
Uterus is anterior to the _______
rectum
What are the three tissue layers of the uterus?
peritoneum, myometrium, endometrium
Describe the peritoneum
a double layered membrane, continuous with the abdominal peritoneum.
Which layer is a thick smooth muscle layer, whose cells of this layer undergo hypertrophy and hyperplasia during pregnancy in preparation to expel the fetus at birth?
myometrium
Describe the endometrium
inner mucous membrane lining the uterus
What are the two layers of the endometrium?
deep stratum basalis and superficial stratum functionalis
Which layer of the endometrium changes little throughout the menstrual cycle and is not shed at menstruation?
Deep stratum basalis
Which layer of the endometrium is shed during menstruation and regenerates from cells in the stratum basalis layer?
Superficial stratum functionalis
Which hormone causes the superficial stratum functionalis to proliferate?
oestrogen
Which hormone causes the superficial stratum functionalis to become secretory?
progesterone
What are the five ligaments that hold the uterus in place?
broad ligament, round ligament, ovarian ligament, cardinal ligament, uterosacral ligament
Which ligament is a double layer of peritoneum attaching the sides of the uterus to the pelvis?
Broad ligament
Which ligament joins the ovaries to the uterus?
Ovarian ligament
Which ligament is a remnant of the gubernaculum extending from the uterine horns to the labia majora via the inguinal canal? It functions to maintain the anteverted position of the uterus.
Round ligament
Which ligament is located at the base of the broad ligament, the cardinal ligament extends from the cervix to the lateral pelvic walls? It contains the uterine artery and vein in addition to providing support to the uterus.
Cardinal ligament
Which ligament is from the cervix to the sacrum?
Uterosacral ligament
What is the arterial supply to the uterus?
uterine artery
What is the venous drainage of the uterus?
via a plexus in the broad ligament that drains into the uterine veins.
Describe the lymphatic drainage of the uterus
iliac, sacral, aortic and inguinal lymph nodes.
Sympathetic nerve fibres of the uterus arise from the _________
uterovaginal plexus
Parasympathetic nerve fibres of the uterus arise from the _____________
pelvic splanchnic nerves (S2-S4).