The anterior triangles refer to bilateral anatomic subdivisions of the neck comprising the anterior surface of the neck, deep to the superficial cervical fascia and platysma muscle. Laterally, the anterior triangle is bounded by the anterior border of the sternocleidomastoid muscle.
Where is the anterior cervical triangle?
The anterior cervical triangle is bounded by the midline of the neck, the anterior border of the sternocleidomastoid muscle (SCM), and the inferior border of the mandible [3]. This triangle is typically subdivided into three paired and one unpaired triangle.
What are the contents of the submandibular triangle?
The following summarizes the important structures found in the submandibular triangle:
- The external and internal carotid artery.
- The internal jugular vein.
- The deep cervical lymph nodes.
- The 10th cranial nerve ( Vagus Nerve )
- The submandibular gland.
- The submandibular lymph nodes.
- The Facial artery and vein.
What are the 2 main triangles of the neck?
The anterior triangle is further divided into muscular, carotid, submandibular and submental and the posterior into occipital and subclavian triangles. …
| Triangles of the neck | |
|---|---|
| Latin | Trigonum cervicale Trigonum colli Regio cervicalis |
| Anatomical terminology |
What muscles are 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.
How many anterior triangles are there?
The anterior triangle is subdivided into 3 paired triangles and a single midline triangle: Paired triangles: digastric triangle. muscular triangle.
How many triangles are in the neck?
The neck is divided into two large triangles (anterior and posterior cervical triangles) by the sternocleidomastoid muscle. It arises from two heads (sternal and clavicular) inferiorly and takes an oblique course superiorly to insert into the mastoid process and lateral aspect of the superior nuchal line.
What Innervates the anterior triangle?
Two cranial nerves, the vagus and glossopharyngeal, have branches in the anterior cervical triangle. Two more nerves are located here: The transverse cervical nerve innervates the skin over the anterior triangle of the neck. The hypoglossal nerve travels to the tongue.
Is the hypoglossal nerve in the submandibular triangle?
submandibular gland (superficial part) facial artery. hypoglossal nerve.
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 is a 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).
What is Pirogov triangle?
The Pirogov triangle (also Piragoff’s triangle) is an area in the human neck formed by the intermediate tendon of the digastric muscle, the posterior border of the mylohyoid muscle, and the hypoglossal nerve. … The lingual artery can be found in the Pirogov triangle underneath the fibers of the hyoglossus muscle.
What forms the floor of the anterior triangle of the neck?
Its floor is formed by the mylohyoid and hyoglossus muscles, and its roof by the investing layer of deep cervical fascia. The hypoglossal nerve enters the submandibular triangle by passing deep to the posterior belly of the digastric muscle and deep to the mylohyoid muscle within the submandibular triangle.
What is the Suboccipital triangle?
The suboccipital triangles are a paired triangular-shaped space formed by the configuration of three paired muscles in the posterior neck between the occipital bone, C1 and C2.
What are the four Suprahyoid muscles of the anterior triangle of the neck?
The suprahyoid musculature includes the geniohyoid, mylohyoid, stylohyoid, hyoglossus, and the anterior belly of the digastric muscle. These muscles attach to the superior aspect of the hyoid bone, and their main combined function is to elevate the hyoid and larynx and move them superiorly and anteriorly.
What muscle is the most powerful muscle in our bodies?
The strongest muscle based on its weight is the masseter. With all muscles of the jaw working together it can close the teeth with a force as great as 55 pounds (25 kilograms) on the incisors or 200 pounds (90.7 kilograms) on the molars.
How do you learn the triangle of the neck?
Which triangle of the neck is a useful landmark for the ANSA Cervicalis?
The location of the ansa cervicalis can be found in the anterior triangle of the neck, superficial to the internal jugular vein in the carotid sheath. The location of the descendens hypoglossi may be seen above or below the posterior belly of the digastric muscle.
What is torticollis of the neck?
Torticollis, also known as wryneck, is a twisting of the neck that causes the head to rotate and tilt at an odd angle.
Where is lateral side of neck?
The lateral cervical region constitutes the posterior triangle of the neck, and it is bounded by the posterior border of the SCM anteriorly, anterior border of the trapezius posteriorly, inferiorly by the middle third of the clavicle between the trapezius and the SCM, superiorly by an apex where the SCM and trapezius …
What are the boundaries of posterior triangle of neck?
Boundaries
- Apex: Union of the sternocleidomastoid and the trapezius muscles at the superior nuchal line of the occipital bone.
- Anteriorly: Posterior border of the sternocleidomastoideus.
- Posteriorly: Anterior border of the trapezius.
- Inferiorly: Middle one third of the clavicle.
Which triangle is the vagus nerve in?
Several nerves also traverse the carotid triangle including the hypoglossal nerve as it exits the submandibular triangle. The glossopharyngeal and vagus nerves are also contained in the deep tissue of these two triangles.
Where is the submandibular triangle located?
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 is submandibular mass?
The differential diagnoses of a submandibular mass include salivary gland pathologies, lymph node diseases, soft tissue problems, vascular and neuronal pathologies. The most common submandibular gland pathologies are consists of sialadenitis, sialolithiasis, benign tumors and carcinomas (2).
Graduated from ENSAT (national agronomic school of Toulouse) in plant sciences in 2018, I pursued a CIFRE doctorate under contract with Sun’Agri and INRAE in Avignon between 2019 and 2022. My thesis aimed to study dynamic agrivoltaic systems, in my case in arboriculture. I love to write and share science related Stuff Here on my Website. I am currently continuing at Sun’Agri as an R&D engineer.