Lecture 3 - pelvic side wall and pelvic mass Flashcards
What artery does the majority of arteries from the pelvis and perineum arise from?
Internal iliac artery
Most arteries from the region arise from the internal iliac artery, with the exception of what 2 arteries?
Gonadal artery
Superior rectal artery
What are anostomoses?
a connection or opening between two things that are normally diverging or branching, such as between blood vessels
What forms the lateral walls of the pelvic cavity?
The lateral walls of the pelvic cavity are formed by the right and left hip bones.
What opening is present on the hip bones?
Each hip bone has an inferior opening called the obturator foramen, which is formed by the pubis and the ischium.
The foramen is partially covered by a membrane called the obturator membrane.
What structures pass through the obturator foramen?
Obturator artery.
Obturator vein.
Obturator nerve.
Location of obturator foramen?
large opening in the pelvic or hip bone, lies just below the acetabulum
What is the sacral plexus?
a network of nerve fibres that supplies the skin and muscles of the pelvis and lower limb. It is located on the surface of the posterior pelvic wall, anterior to the piriformis muscle.
The plexus is formed by the anterior rami (divisions) of the sacral spinal nerves S1, S2, S3 and S4.
what 2 peritoneal ligaments attach to the ovary?
Suspensory ligament of ovary – fold of peritoneum extending from the mesovarium to the pelvic wall. Contains neurovascular structures.
Ligament of ovary – extends from the ovary to the fundus of the uterus. It then continues from the uterus to the connective tissue of the labium majus, as the round ligament of uterus.
The main arterial supply to the ovaries is the ovarian artery, what does this arise from?
Arise directly from the abdominal aorta
How is venous drainage of ovaries achieved?
achieved by paired ovarian veins
The left ovarian vein drains into the left renal vein, and the right ovarian vein drains directly into the inferior vena cava. true/false?
True
Lymph from the ovaries drain into what lymph nodes?
Para-aortic nodes
Arterial blood supply and venous drainage of the uterus?
The blood supply to the uterus is via the uterine artery.
Venous drainage is via a plexus in the broad ligament that drains into the uterine veins.
Lymphatic drainage of the uterus?
via the iliac, sacral, aortic and inguinal lymph nodes.
