pelvis myology

Question 1

what is the muscle that supports movement to the pelvis

Answer 1

transverse abdominis

Question 2

transverse abdominis

Answer 2

*Origin- lateral third of inguinal ligament, anterior ⅔ of inner lip of iliac crest, thoracolumbar fascia and inner surface of costal cartilages 7-12
*Insertion- linea alba and pubic crest
*Action- compresses the abdominal cavity, acts as a muscular ‘corset’, raises intra-abdominal pressure, coughing/sneezing
*Nerve- thoracoabdominal (T7-11), subcostal (T12) and ilioinguinal (L1)

Question 3

what does the pelvic floor do

Answer 3

• Made up of levator ani and coccygeus
• Cover the underneath opening of the pelvis
• Separates the pelvic cavity and the perineal region
• Provides support for the pelvic viscera
• Should always be taught – relax during urination/defecation then
  tighten back up
• Will contract further during
  cough/sneeze etc – to counteract sudden increased intra-abdominal pressure

Question 4

how does the pelvic floor differ in women

Answer 4

• Pelvic cavity is larger in females to
  accommodate birth canal
• More at risk of pathology compared to
  males

Question 5

how does the pelvic floor differ in men

Answer 5

supports the bladder and bowel organs