Anatomy Flashcards
Blood Supply to the Uterus (and origin of vessel(s))
Uterine artery (origin:internal iliac artery-common iliac artery-abdominal aorta) Collateral supply from ovarian arteries (origin:abdominal aorta)
Venous Drainage of the Uterus
Uterine veins (from internal iliac vein-common iliac vein-inferior vena cava)
Which bones form the bony pelvis?
2 hip bones, sacrum and coccyx
Bones of the Pelvic Inlet
Sacral promontory, ilium, superior pubic ramus, pubic symphysis
Bones of the Pelvic Outlet
Pubic symphysis, ischiopubic ramus, ischial tuberosities, sacrotuberous ligaments, coccyx
Where is the False Pelvis?
Above Pelvic inlet
Where is the True Pelvis?
Below Pelvic inlet
Where is the Pelvic Cavity?
The space betweem the pelvic inlet and the levator ani muscle
5 Functions of the Bony Pelvis
1) Support of he upper body when sitting and standing
2) Transference of weight from vertebral column to femurs allowing standing and walking
3) Attachment for muscles of locomotion and abdominal wall
4) Protection of pelvic organs, their blood and nerve supply, their venous and lymphatic drainage
5) Passage for childbirth
Bones that make up the hip bone
ilium, ischium, pubic bone
Bony features of the Ilium
Iliac crest Anterior superior iliac spine Posterior superior iliac spine Iliac fossa Anterior inferior iliac spine Posterior inferior iliac spine
Bony features of the ischium
Ischiopubic ramus
Ischial tuberosity
Ischial spine
Pubic Bone
Superior pubic ramus Pubic tubercle Ischiopubic ramus Pubic arch Subpubic angle
Joints of the Bony Pelvis
Sacroiliac joints Hip joints (femur and acetabulum) Pubic symphysis
Palpable Surface Landmarks of the Bony Pelvis
Iliac crest ASIS Pubic Symphisis Pubic Tubercle PSIS Ischial Tuberosity Sacrum Coccyx
Ligaments of the Bony Pelvis
Sacrospinous ligament: Sacrum to ischial spine
Sacrotuberous ligament: Sacrum to ischial tuberosity
Foraminae of the Bony Pelvis
Obturator foraminae (obturator artery, vein and nerve) Greater and lesser sciatic foraminae
Blood vessels in the pelvis at risk of haemorrhage
common iliac artery and common iliac vein
Sutures and fontanelles of the foetal skull
Midline sagittal suture
Coronal suture
Lambdoid suture
Anterior and posterior fontanelles
Moulding
Movement of one bone over another to allow the foetal head to pass through the pelvis during labour
Vertex of the foetal skull
An area of the foetal skull outlined by the anterior and posterior fontanelles and parietal eminences
Which diameter of the foetal skull is longer?
The occipitofrontal diameter is longer than the biparietal diameter
Position of foetal head at the pelvic inlet during labour.
Transverse
Position of foetal head whilst descending through the pelvic cavity.
Rotated and in a flexed position
Position of the foetal head at the pelvic outlet?
Occipitoanterior position and in extension
Differences between male and female pelvis
The AP and transverse diameters of the female pelvis are larger than the male at both the pelvic inlet and outlet
The subpubic angle (and pubic arch) in the female is wider than the male
The pelvic cavity is shallower in the female
Which parts of the female reproductive system are in the pelvic cavity?
Ovaries, uterine tubes, uterus and most of the vagina
Which parts of the female reproductive system are in the perineum
Inferior part of the vagina, perineal muscles, bartholins glands, clitoris, labia
What does the parietal peritoneum form
It forms the floor of the peritoneal cavity and a roof over the pelvic organs.
Where is the pouch of douglas?
The rectouterine pouch, the most inferior part of the peritoneal cavity
Where is the broad ligament?
Suspends the uterus, uterine tube and ovary from the lateral wall of the pelvic cavity
Where is the round ligament?
Attaches the uterus to the perineum