ZYGAL FISSURE Meaning and
Definition
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A zygal fissure refers to a narrow, slit-like groove or an opening that is commonly found in certain anatomical structures. It is typically used to describe the presence of such a crevice in the brain's gray matter, particularly in the cerebral cortex. The term "zygal" comes from the Greek word "zygon," meaning yoke, implying the resemblance of the fissure to a double-headed yoke.
In neuroanatomy, the zygal fissure refers specifically to a prominent fissure found in the brain that separates the parahippocampal and entorhinal cortices in the medial temporal lobe. This fissure is part of the limbic system and plays a crucial role in memory and spatial navigation. It is believed to be involved in the formation and retrieval of spatial and declarative memories.
The zygal fissure can also be observed in other contexts, such as the temporomandibular joint (TMJ). In this case, the zygal fissure refers to the small gap between the condylar head of the mandible (lower jawbone) and the temporal bone of the skull. It serves as a point of attachment for the articular disc and allows for the smooth movement of the jaw during chewing and speaking.
Overall, the zygal fissure is an anatomical term used to describe a narrow, slit-like groove or opening typically observed in the brain's gray matter or the temporomandibular joint.
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A figure formed by two nearly parallel cerebral fissures connected by a short fissure at right angles, forming an H.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for ZYGAL FISSURE
Etymology of ZYGAL FISSURE
The term "zygal fissure" is composed of two distinct components: "zygal" and "fissure".
The word "zygal" comes from the Greek word "zygon", which means "yoke" or "pair". In the context of anatomy, "zygal" is typically used to describe structures that come in pairs or are yoke-like in nature, often referring to joints or articulations.
The word "fissure" derives from the Latin word "fissura", which means "a cleft" or "split". It refers to a narrow opening, crack, or groove, particularly used in the context of anatomical or geological structures.
Therefore, the term "zygal fissure" combines the idea of a pair or yoke-like structure ("zygal") with a narrow opening or crack ("fissure").
