Pelvis Flashcards
(19 cards)
Define the greater pelvis
superior region related to upper part of pelvic noes and lower lumbar vertebrae - part of the abdomen
Define lesser pelvis
related to the inferior parts of the pelvic bones, sacrum and coccyx. has an inlet and outlet.
Where would you insert a spinal block?
PSIS - at level L3/4
Which muscle divides the urogenital and anal triangles?
Perineal
What are the roots of the pudendal n?
S2,3,4
Where does ext. abdo oblique arise?
Lower 12 ribs (5-12)
What is the action of ext.abdo.oblique?
Compress the abdominal cavity
What is the action of internal abdo oblique?
Flexes/rotates trunk and raises abdominal pressure
What is the deepest of the anterolateral abdominal muscles?
Transverse abdominus
Where does transverse abdominus arise?
Costal cartilages of ribs 7-12, lumbar fascia and inguinal ligament.
Where does transverse abdominus insert?
Diaphragm, linea alba and pubic crest
What is the action of transverse abdominus?
Flexion, extension and lateral flexion of trunk
Where do the pyramidals arise?
pubic crest and symphysis - insert into linea alba
What is the perineal body?
central tendon in the perineum into which muscles of the pelvic floor and perineum attach
What is the Pouch of Douglas
extension of peritoneal cavity between rectum and uterus
Which parts of the pelvis are served by the lumbar lymph nodes?
Ovary/uterine tubes
Testes/epididymus
Which is the main lymph node for drainage of the pelvis
External iliac
What drains into the interal iliac nodes
mod/lower vagina and urethra
What are the borders of the femoral triangle?
Floor- iliopsoas and pectineus; Roof - fascia lata, skin
medial - adductor longus, lateral - sartorius, superior - inguinal ligament
