Anatomy Flashcards
Pelvic outlet boundaries?
Coccyx posteriorly, pubic synthesis anteriorly, 2 ischial tuberosities laterally.
Pelvic inlet boundaries?
Promontory and ala of sacrum posteriorly, arcuate and pectineal lines laterally, superior pubic rami, body of the pubis and pubic synthesis anteriorly.
Define the lesser pelvis
The pelvic inlet, outlet and muscular pelvic floor.
Define the greater pelvis
Iliac blades on both sides and the base of the sacrum posteriorly.
Sacrotuberous ligament?
Ligament between the sacrum and ischial tuberosity.
Sacrospinous ligament?
Ligament between the sacrum and ischial spine.
What travels through the obturator foramen and where does it supply?
The obturator neurovascular bundle and it supplies the medial compartment of the thigh.
What is the obturator neurovascular bundle covered by and what is it an attachment point for?
Obturator internus, covered by obturator fascia which thickens to form the tendinous arch. The tendinous arch is an attachment point for the pelvic diaphragm.
Blood supply to the pelvis?
Common iliac artery and vein.
What is the most posterior suture on the foetal skull?
Lamboid suture.
What is the most anterior suture on the foetal skull?
Coronal suture.
What are the three levels of the pelvic floor?
- Pelvic diaphragm.
- Muscles of perineal pouches.
- Perineal membrane.
What are the two muscle groups that make up the pelvic diaphragm?
- Levator ani
- Coccygyeus
What makes up the levator ani?
- Puborectalis
- Pubococcygeus
- Iliococcygeus
What does the superficial perineal pouch mainly contain?
Female erectile tissue
What does the anterior division of the internal iliac artery divide into?
Courses towards the spine of the ischium to supply the ureter, ovarian artery and fimbriated end of the uterine tube and ovary.
What does the posterior division of the internal iliac artery divide into?
Superior gluteal, lateral sacral, and iliolumbar arteries.
Where does the internal iliac vein lie in relation to the internal iliac arteries?
Behind.
Where does the external iliac vein lie in relation to the internal iliac arteries?
Below and medial.
Where does blood supply to the superior aspect of the bladder originate from?
Umbilical artery.
What does the uterine artery anastamose with?
Ovarian artery.
Where does blood supply the vagina originate from?
Branches of the uterine artery.
What are the terminal branches of the internal iliac artery?
Internal pudendal artery and the inferior gluteal artery.
What are the terminal branches of the pudendal nerve?
Dorsal nerve of the clitoris and the perineal nerve below.
What does the inferior gluteal artery leave the pelvis through?
Lower part of the greater sciatic foramen.
Where does the inferior rectal artery originate from?
Internal pudendal artery.
Where does the inferior gluteal artery supply?
Gluteal region and structures in the posterior aspect of the thigh.
Where does lymph from the pelvis drain?
Nodes studded along the internal iliac veins then drained into the paravertebral and lateral aortic nodes.
