Anatomy Quiz 1 1

Homeostasis of systems where there is an ideal alignment for function pan-free movement

• Stability (core strength/ joint structure)
• Strength/tone of muscle
• Proprioception/body awareness
• Motor control

• Thoracic
• Sacral

Formed from 3 distinct bones, which fuse together to form acetabulum

Sacral promontory, ala of sacrum, arcuate line, pectin pubis, pubic crest, pubic symphysis

• Tilted 50 deg
• S1 articulated with L5
• Optimal for movement
• Aligns acetabulum for articulate ion with femur

• Covered with muscle
• Structures move to anterior wall of true pelvis to relieve pressure of being pushed out by gravity and abdominal muscles

coccyx, sacrotuberous ligament , ischial tuberosity/ramis, inferior pubic ramis, public symphysis

• smaller, heart shaped
• ala oriented more vertically
• infra pubic angle <70°
• smaller sciatic notch
• -----more susceptible to sciatic nerve compression bc less space and bigger muscles
• sacrum more curved into pelvic space
• bony land marks more defined
• ischial spine more inferiorly and more rounded

• larger, wider
• ala flare out
• wider/ broader infrapubic angle (>90°)
• -----ischial tuberosities further apart
• ---------more stable while siting
• wider/larger sciatic notch
• sacrum a little bit flatter
• smoother surfaces
• ischial spines more medially and finer/”pointier”
• -----attachment of sacrospinous ligament
• obturator foramen different shape

Sacrotuberous and sacrospinous ligaments

exit pelvis through great sciatic foreman, raps around ischial spine, re-enters pelvis through lesser sciatic foramen, innervates pelvic visceral and pelvic floor muscles

• superior aperture to imaginary line across iliac crest
• contains abdominal viscera
• in confines of ala of pubis

• space btwn pelvis inlet and outlet
• where true pelvis viscera is