triangles Flashcards
Borders of posterior triangle
lateral border of sternoclidomastoid, border of trapesius, clavicle
Occipital triangle borders
sternocleidomastoid, trapesius, superior border of infeior belly of omohyoid (part of posterior triangle)
Supraclavicular triangle borders
sternocleidomastoid, clavicle, inferior belly of omohyoid
Anterior triangle borders
sternocleidomastoid, midline of neck, body of mandible
Submandibular triangle borders
2 bellies of digastric muscle, body of mandible
muscular triangle borders
is bounded, in front, by the median line of the neck from the hyoid bone to the sternum; behind, by the anterior margin of the Sternocleidomastoideus; above, by the superior belly of the Omohyoideus. Is Covered by platysma muscle
also called inferior carotid triangle
muscular trangle contents
sternohyoid, sternothyroid, cover over comon carotid and jugular and vaugs i guess
It is covered by the integument, superficial fascia, Platysma, and deep fascia, ramifying in which are some of the branches of the supraclavicular nerves.
Beneath these superficial structures are the Sternohyoideus and Sternothyreoideus, which, together with the anterior margin of the Sternocleidomastoideus, conceal the lower part of the common carotid artery.
This vessel is enclosed within its sheath, together with the internal jugular vein and vagus nerve; the vein lies lateral to the artery on the right side of the neck, but overlaps it below on the left side; the nerve lies between the artery and vein, on a plane posterior to both.
In front of the sheath are a few descending filaments from the ansa cervicalis; behind the sheath are the inferior thyroid artery, the recurrent nerve, and the sympathetic trunk; and on its medial side, the esophagus, the trachea, the thyroid gland, and the lower part of the larynx.
Branches fo external carotid
superior thyroid a w/ superior laryngeal branch, ascending pharyngeal, lingual, facial, occipital, (cross digastric), posterior auricular, branch into maxillary and superfical temporal which gives transvers facial