Sylvian fissure

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Sylvian Fissure

The Sylvian fissure (pronounced: sil-vee-an fish-er), also known as the lateral sulcus (pronounced: lat-er-al sul-kus), is a prominent structure in the brain that separates the frontal lobe and parietal lobe from the temporal lobe.

Etymology

The Sylvian fissure is named after Franciscus Sylvius, a Dutch physician and anatomist who first described this structure in the 17th century. The term "fissure" comes from the Latin word "fissura", meaning "a cleft or split", which accurately describes the appearance of this structure in the brain.

Anatomy

The Sylvian fissure begins at the base of the brain near the stem, extending laterally and upwards on each side of the brain. It is one of the earliest fissures to form in the brain during embryonic development. The Sylvian fissure is filled with cerebrospinal fluid and is surrounded by several important structures, including the insula, Broca's area, and Wernicke's area.

Related Terms

  • Insula: A region of the brain located within the lateral sulcus.
  • Broca's area: A region in the frontal lobe associated with speech production, located near the lateral sulcus.
  • Wernicke's area: A region in the temporal lobe associated with language comprehension, located near the lateral sulcus.
  • Cerebrospinal fluid: A clear, colorless body fluid found in the brain and spinal cord.
  • Frontal lobe: The part of the brain located at the front of each cerebral hemisphere.
  • Parietal lobe: The part of the brain positioned above the occipital lobe and behind the frontal lobe.
  • Temporal lobe: The part of the brain located beneath the lateral sulcus on both cerebral hemispheres.

External links

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