Semilunar

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Semilunar

Semilunar (pronunciation: /ˌsɛmɪˈluːnər/), from the Latin semi meaning "half" and luna meaning "moon", refers to anything that is shaped like a half-moon or crescent.

Etymology

The term semilunar is derived from the Latin words semi, which means half, and luna, which means moon. This term is often used in the field of Anatomy to describe structures that have a crescent or half-moon shape.

Related Terms

  • Semilunar valve: A pair of valves in the heart, consisting of the aortic valve and the pulmonary valve, which prevent the backflow of blood into the ventricles.
  • Semilunar ganglion: Also known as the Gasserian ganglion, it is a sensory ganglion of the trigeminal nerve (CN V) that occupies a cavity (Meckel's cave) in the dura mater covering the trigeminal impression near the apex of the petrous part of the temporal bone.
  • Semilunar hiatus: An opening in the lateral wall of the nasal cavity, leading into the frontal sinus, anterior ethmoidal cells and maxillary sinus.
  • Semilunar line: A curved line on the inner surface of the rectus abdominis muscle, marking the lateral border of the rectus abdominis muscle.

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