CAECUM

• Ileal papilla
• Ileal orifice; orifice of ileal papilla
• Frenulum of ileal orifice
• Ileocolic lip; superior lip
• Ileocaecal lip; inferior lip
• Appendix; vermiform appendix
  • Orifice of vermiform appendix
  • Aggregated lymphoid nodules Peyeri
• (Precaecocolic fascia)

* 1 caecum

• 1.1 dimensions
  • 1.1.1 6 cm long and 7.5 cm broad
• 1.2 relations
  • 1.2.1 anterior
  • 1.2.2 posterior
    • muscles
      • right psoas
      • iliacus
    • nerves
      • genitofemoral
      • femoral
      • lateral cutaneous nerve of thigh
    • vessels
      • testicular or ovarian
• 1.3 vessels and nerves
  • 1.3.1 ileocolic artery
  • 1.3.2 T11 to L1 nerve suppply
• 1.4 ileocecal valve
  • 1.4.1 structure
    • 2 lips
      • upper lip is horizontal
      • lower lip is longer and concave
    • 2 frenula
      • left or anterior
      • right or posterior
  • 1.4.2 control and mechanism
    • closed by sympathetic nerves
    • Closes ileocaecal spinchter
    • mechanically closed by distension of caecum
  • 1.4.3 functions
  • 1.4.4 features
• 1.5 features
  • 1.5.1 large blind sac
  • 1.5.2 situated in right iliac fossa