Pelvis

Pelvis

1. Abdomen+Pelvis= largest visceral cavity of the body

   • Supports and protects digestive urinary tracts and reproduction organs

2. Divided into

   • True
     • Bowl-shaped structure
       • Formed from
         • Sacrum
         • Pubis
         • Ilium
         • Ischium
         • Ligaments
         • Bones and muscles
   • False
     • Part of the walls of the lower abdomen

3. Muscles

   • Piriformis
   • Obturador internus
   • Levator ani and coccygeous
     • Form the pelvic diaphragm
       • Delineate the lower limit of the true pelvis
         • Ischicoccygeous
         • Ilicoccygeous
         • pubococcygeous

4. Pelvic fasciae

   • Divided into
     • Parietal pelvic fascia
       • Covers the pelvic muscles
     • Visceral pelvic fascia
       • covers viscera and their vessels and nerves

5. Innervation

   • by
     • Lumbosacral nerve trunk
     • Sacral and coccygeal plexuses
     • Pelvic p. of the symp. and parasympathetic sys.

6. Differences in male and female

   • Bone position
     • Male: narrow pelvic space
     • Female: wide space to grow a fetus
   • Reproductive System