Table of Contents
What are the contents of submental triangle?
Contents. It contains one or two lymph glands, the submental lymph nodes (three or four in number) and Submental veins and commencement of anterior jugular veins.
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.
What are the contents of the occipital triangle?
- spinal accessory nerve.
- cutaneous and muscular branches of the cervical plexus.
- upper most part of brachial plexus.
- supraclavicular nerve.
- transverse cervical vessels.
What part of the body is submental?
The submental triangle is the only unpaired triangle of the anterior triangle of the neck. It is limited by the body of the hyoid bone and the anterior bellies of the digastric muscle. The mylohyoid muscles form the floor of the submental space.
How many submental triangles are there?
These three triangles are paired, because they are found on both sides of the midline, but the submental is unpaired and sits on the midline just inferior to the chin.
What is the bloody triangle in neck surgery?
Both anterior bellies of the digastrics form the submental triangle, which is the mid- line of the neck. The vascular or carotid trian- gle is inferior to the digastric and hyoid.
What is the 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.
How many triangles are there in neck?
This space is subdivided into two large triangles by sternocleidomastoid, which passes obliquely across the neck, from the sternum and clavicle below, to the mastoid process and occipital bone above….
|Triangles of the neck
|Trigonum cervicale Trigonum colli Regio cervicalis
What comes out of the suboccipital triangle?
The suboccipital triangle contains the vertebral artery, suboccipital nerve (C1), and suboccipital venous plexus. The left and right vertebral arteries then merge at the brainstem to form the basilar artery. The suboccipital nerve is the posterior ramus of C1 spinal nerve.
Why is the suboccipital triangle important?
Three of the four muscles form the suboccipital triangle, a common anatomic landmark that localizes the vertebral artery and suboccipital nerve. This landmark is of particular importance to surgeons who operate in the posterior cervical region to avoid life-threatening bleeding.
What makes up the border of a digastric triangle?
This triangle contains submental lymph nodes, submental veins and jugular veins. Submandibular triangle: This paired triangle is also known as the digastric triangle, since its borders are formed by the anterior and posterior bellies of digastric muscle, along with the inferior border of the mandible.
Where does the digastric muscle divide the anterior triangle?
The digastric muscle divides the anterior triangle of the neck into three smaller divisions: the carotid triangle, the submental triangle and the submandibular triangle. Carotid triangle: The posterior belly of digastric muscle forms the superior border of the carotid triangle.
Is the digastric triangle superior to the hyoid bone?
Boundaries. 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, posteriorly by the posterior belly of the digastric and stylohyoid muscles, and. anteriorly by the anterior belly of digastric muscle.
Is the posterior belly of the digastric muscle innervated?
The posterior belly of the digastric muscle is derived from the mesoderm of the second pharyngeal arch and is therefore innervated by the digastric branch of the facial nerve (cranial nerve 7).