Lungs

LUNGS

  • The lungs are paired organs located in the thoracic cavity.
  • The surface of each lung is covered by a serous membrane (pleura).
  • Each lung is divided into a number of lobes and pleura, dips into interlobar fissures tissue and covers interlobar surfaces. Each lobe is sub-divided by interlobular tissue into lobules.
  • Each lobule is pyramidal with apex towards the hilus and base towards serous membrane Lobulations are visible as polygonal areas on the surface of lungs.
  • The lobulation is not so distinct in many animals, because there is less of interlobular connective tissue.
  • The septa of interstitial tissue contain, bronchi, vessels and nerves.
  •  Each lobule contains the respiratory structures arising from a terminal bronchiole.
Last modified: Saturday, 21 August 2010, 9:17 AM