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Fissure

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In anatomy, a fissure (Latin fissura, plural fissurae) is a groove, natural division, deep furrow, elongated cleft, or tear in various parts of the body also generally called a sulcus, or in the brain a sulcus.

Contents

Brain

  • Medial longitudinal fissure or Longitudinal fissure: which divides the cerebrum into the two hemispheres.
  • Fissure of Bichat: found below the corpus callosum in the cerebellum of the brain.
  • Broca's fissure: found in the third left frontal fold of the brain.
  • Burdach's fissure: connects the brain's insula and the inner surface of the operculum.
  • Calcarin's fissure: extends from the occipital of the cerebrum to the occipital fissure.
  • Callosomarginal fissure: found in the mesial surface of the cerebrum.
  • Central sulcus or Rolando's fissure: separates the brain's frontal and parietal lobes.
  • Clevenger's fissure: found in the inferior temporal lobe of the brain
  • Collateral fissure: found in the inferior surface of the cerebrum.
  • Hippocampal sulcus: a sulcus that extends from the brain's corpus callosum to the tip of the temporal lobe.
  • Horizontal fissure or Transverse fissure: found between the cerebrum and the cerebellum. Note that a "transverse fissure" can also be found in the liver and lungs.
  • Occipitoparietal fissure: found between the occipital and parietal lobes of the brain.
  • Fissure of Sylvius: separates the frontal and parietal lobes of the brain from the temporal lobe.
  • Wernicke's fissure: separates the brain's temporal and parietal lobes from the occipital lobe.
  • Zygal fissure: found in the cerebrum.

    • Skull

  • Auricular fissure: found in the temporal bone
  • Pterygomaxillary fissure
  • Petrotympanic fissure
  • Sphenoidal fissure: separates the wings and the body of the sphenoid bone.
  • Superior orbital fissure

    • Liver

  • Longitudinal fissure: found in the lower surface of the liver, also a fissure that separates the right and left hemispheres of the cerebrum.
  • Portal fissure: found in the under-surface of the liver.
  • Umbilical fissure: found in front of the liver.
  • fissure for ligamentum teres hepatis
  • fissure for ligamentum venosum

    • Spinal cord

  • ventral median fissure

    • Lung

  • oblique fissure of right & left lung
  • horizontal fissure of right lung
  • azygos fissure of right lung

    • Other

  • Henle's fissure: the connective tissue between the muscle fibers of the heart.
  • Palpebral fissure: separates the upper and lower eyelids.
  • Anal Fissure: a break or tear in the skin of the anal canal.
  • Fissure of the nipple

    • Abnormal fissure

    Fissure can also refer to an unnatural tract or ulcer, most commonly found in the anus and called an anal fissure.

    References

    Fissure Wikipedia
    (Text) CC BY-SA


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