Occipital triangle
Occipital Triangle
The Occipital Triangle (pronounced: ahk-sip-i-tl try-an-gul) is a significant anatomical region located in the posterior aspect of the neck. It is one of the four triangles of the neck, the others being the submandibular, submental, and carotid triangles.
Etymology
The term "Occipital Triangle" is derived from the Latin word "occiput" meaning "back of the skull" and the Greek word "trigonon" meaning "triangle". It is named so due to its proximity to the occipital bone at the back of the skull.
Anatomy
The Occipital Triangle is bounded by the sternocleidomastoid muscle anteriorly, the trapezius muscle posteriorly, and the omohyoid muscle inferiorly. The floor of the triangle is formed by the semispinalis capitis muscle and the splenius capitis muscle. The roof is formed by the investing layer of deep cervical fascia.
The triangle contains important structures such as the occipital artery, occipital vein, greater occipital nerve, and lesser occipital nerve.
Related Terms
- Occipital Bone: The bone that forms the back part of the skull and surrounds the foramen magnum.
- Occipital Lobe: The visual processing center of the mammalian brain.
- Occipital Artery: A major artery supplying the posterior scalp.
- Greater Occipital Nerve: A spinal nerve that provides sensation to the back of the head up to the top (crown).
External links
- Medical encyclopedia article on Occipital triangle
- Wikipedia's article - Occipital triangle
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