What muscles are in the posterior triangle of the neck?
These borders include the trapezius muscle posteriorly, the sternocleidomastoid muscle anteriorly, and the middle one-third of the clavicle inferiorly. The union of the sternocleidomastoid and trapezius muscles at their insertion on the superior nuchal line of the occipital bone form the apex of the triangle.
Which muscle forms a triangle shape in the neck?
Each side of the neck contains two triangular sections created by the major deep muscles. The sternocleidomastoid muscle separates the sections, known as the anterior and posterior triangles.
What is digastric triangle?
The submandibular triangle, also known as the digastric triangle, is bounded anteriorly by the anterior belly of the digastric muscle, posteriorly by the posterior belly of the digastric muscle, superiorly by the mandible, and inferiorly by the mylohyoid and hypoglossus muscles.
What are the contents of digastric triangle?
- anterior part of the triangle contains the submandibular gland.
- posterior part of the triangle contains the lower part of the parotid gland.
- facial artery is deep to the submandibular gland and the facial vein lies superficial to the gland.
- submandibular lymph nodes are situated near the gland.
What is occipital triangle?
The occipital triangle is one of the paired triangles in the posterior triangle of the neck. The triangles of the neck are surgically focused, first described from early dissection-based anatomical studies which predated cross-sectional anatomical description based on imaging (see deep spaces of the neck).
Where is the anterior triangle of the neck?
The anterior triangle is the triangular area of the neck found anteriorly to the sternocleidomastoid muscle. It is formed by the anterior border of sternocleidomastoid laterally, the median line of the neck medially and by the inferior border of the mandible superiorly.
What are triangular muscles?
A flat muscle with a broad origin and narrow insertion.
Can you feel submandibular triangle?
It is possible to feel the submandibular gland through the location of the submandibular triangle, the edges of which are made up by the anterior belly of the digastric muscle, the posterior belly of the digastric muscle and the inferior border of the mandibular body (the ridge of the lower jaw).
What is a Submaxillary triangle?
The submandibular triangle (or submaxillary or digastric triangle) corresponds to the region of the neck immediately beneath the body of the mandible.
Which nerve is present in Digastric triangle?
The anterior belly of digastric receives its blood supply chiefly from the submental branch of the facial artery. 14. Innervation • The anterior belly of digastric is supplied by the mylohyoid branch of the inferior alveolar nerve, and the posterior belly is supplied by the facial nerve.
Why is the triangle of the neck important?
There are many triangles in the neck containing arteries, veins, nerves, lymph vessels and nodes, and other important structures. A better understanding of the anatomy of these triangles of the neck could help to minimize surgical injuries and make surgical dissections more efficient.
What is the muscular triangle?
The muscular triangle contains: the infrahyoid muscles (thyrohyoid, sternothyroid, sternohyoid), vessels (superior and inferior thyroid arteries, anterior jugular veins) and viscera (thyroid and parathyroid glands, larynx, trachea, esophagus).