What are the contents of Digastric triangle?
What are the contents of 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.
Which nerve is present in Digastric triangle?
The nerve that supplies the mylohyoid is a branch of the alveolar division of the mandibular division of the trigeminal nerve (CN V3), and lies on the surface of the inferior aspect of the muscle.
How many digastric triangles are there?
This triangle is typically subdivided into three paired and one unpaired triangle. The three paired triangles are the submandibular (digastric), carotid, and muscular triangles. The unpaired triangle is the submental triangle.
What is Geniohyoid?
The geniohyoid muscle is one of the suprahyoid muscles of the neck that is innervated by the ventral ramus of C1. Geniohyoid draws the hyoid bone up and forward during mastication and assists the opening of the mandible.
What are the bordering landmarks of the anterior triangle of the neck?
Laterally, the anterior triangle is bounded by the anterior border of the sternocleidomastoid muscle. Its superior border is the inferior border of the mandible. Medially, the boundary is the midline of the neck. The anterior triangle can further subdivide into four sub-triangles.
What three landmarks create the borders of the neck anterior triangle?
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 is the Digastric muscle?
The digastric muscle functions during swallowing, chewing, and speech. The anterior belly of the digastric is one of the three suprahyoid muscles which stabilizes the hyoid during swallowing, an action critical in protecting the airway while eating.
What are the boundaries of anterior triangle?
Which structure is found in the posterior triangle?
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.
What is the Hyoglossus?
The hyoglossus muscle is a thin, quadrilaterally shaped muscle in the upper neck and the floor of the mouth. It is one of the extrinsic muscles of the tongue. The submandibular ganglion suspended from the lingual nerve sits on it.
Is the digastric triangle an anterior or posterior triangle?
Digastric triangle. The digastric triangle is one of the paired triangles in the anterior 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 ).
Is the digastric triangle superior to the hyoid bone?
The submandibular triangle, also known as digastric triangle, is located superior to the hyoid bone . It is bordered: superiorly by the inferior border of the mandible and the mastoid process, anteriorly by the anterior belly of digastric muscle.
What are the two parts of the digastric muscle?
The digastric muscle is comprised of two parts; anterior and posterior bellies, joined by an intermediate tendon. Each of the digastric muscle bellies has a unique point of origin. The posterior belly originates at the medial surface of mastoid notch of temporal bone.
Where are the submental veins located in the digastric?
Submental triangle: This unpaired triangle is bordered laterally by the anterior bellies of digastric muscles on each side, and inferiorly by the body of the hyoid bone. This triangle contains submental lymph nodes, submental veins and jugular veins.
