Fissure

Various types of fissure are:

• Auricular fissure: found in the temporal bone
• 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.
• Calcarine fissure: extends from the occipital of the cerebrum to the occipital fissure.
• Callosomarginal fissure: found in the mesial surface of the cerebrum.
• Central fissure or Ronaldo’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.
• Fissure vent: a volcanic vent that does not include explosive activity.
• Henle’s fissure: the connective tissue between the muscle fibers of the heart.
• Hippocampal fissure: a fissure 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. Transverse fissure is also found in the liver and lungs.
• Longitudinal fissure: found in the lower surface of the liver, also a fissure that separates the right and left hemispheres of the cerebrum.
• Occipitoparietal fissure: found between the occipital and parietal lobes of the brain.
• Palpebral fissure: separates the upper and lower eyelids.
• Portal fissure: found in the under-surface of the liver.
• Sphenoidal fissure: separates the wings and the body of the sphenoid bone.
• Fissure of Sylvius: separates the frontal and parietal lobes of the brain from the temporal lobe.
• Umbilical fissure: found in front of the liver.
• Wernicke’s fissure: separates the brain’s temporal and parietal lobes from the occipital lobe.
• Zygal fissure: found in the cerebrum.

Fissure can also mean unnatural tract or ulcer, most commonly found in the anus. One of the most common types of fissure is anal fissure.

• Sulcus (anatomy)

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