Occipital triangle

Occipital triangle
Occipital triangle
Musculi coli base, my edits for tringles, Occipital triangles.svg
Occipital triangle
Gray1210.png
Side of neck, showing chief surface markings. (Nerves are yellow, arteries are red.)
Gray's subject #145 565

The occipital triangle, the larger division of the posterior triangle, is bounded, in front, by the Sternocleidomastoideus; behind, by the Trapezius; below, by the Omohyoideus.

Its floor is formed from above downward by the Splenius capitis, Levator scapulæ, and the Scaleni medius and posterior.

It is covered by the skin, the superficial and deep fasciæ, and by the Platysma below.

The accessory nerve is directed obliquely across the space from the Sternocleidomastoideus, which it pierces, to the under surface of the Trapezius; below, the supraclavicular nerves and the transverse cervical vessels and the upper part of the brachial plexus cross the space.

The roof of this triangle is formed by the cutaneous nerves of cervical plexus and the external jugular vein and platysma muscle

A chain of lymph glands is also found running along the posterior border of the Sternocleidomastoideus, from the mastoid process to the root of the neck.

Gallery

See also

External links

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained within it may be outdated.


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • occipital triangle — the area bounded by the sternocleidomastoid muscle anteriorly, the trapezius muscle posteriorly, and the omohyoid muscle inferiorly …   Medical dictionary

  • occipital triangle inferior — a triangular area having a line between the two mastoid processes as its base and the inion as its apex …   Medical dictionary

  • Occipital — The word occipital, in zoology, pertains to the occiput (rear of the skull).[1] Occipital is a descriptor for several areas of animal human anatomy. External occipital protuberance Internal occipital crest Greater occipital nerve Lesser occipital …   Wikipedia

  • triangle — [ trijɑ̃gl ] n. m. • v. 1270; lat. triangulum 1 ♦ Figure géométrique, polygone plan à trois côtés. Les trois côtés, les trois sommets, les trois angles d un triangle. Triangle quelconque, scalène, isocèle, équilatéral. Triangle rectangle, qui a… …   Encyclopédie Universelle

  • Occipital condyle — Occipital bone. Outer surface. (Condyle for artic. with atlas labeled at lower left.) Latin condylus occipitalis Gray s …   Wikipedia

  • triangle — In anatomy and surgery, a three sided area with arbitrary or natural boundaries. SEE ALSO: trigonum, region. [L. triangulum, fr. tri , three, + angulus, angle] anal t. [TA] the posterior portion of the perineal region through which the …   Medical dictionary

  • Occipital bone — Bone: Occipital bone Sagittal section of skull. (Occipital bone is at right, in blue.) …   Wikipedia

  • Occipital artery — Artery: Occipital artery The arteries of the face and scalp. (Occipital visible at center left.) …   Wikipedia

  • Occipital vein — Vein: Occipital vein Veins of the head and neck. (Occipial visible at left.) …   Wikipedia

  • Occipital groove — Bone: Occipital groove Left temporal bone. Outer surface. (Occipital groove labeled at bottom right.) Latin sulcus arteriae occipitalis Gray s …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”