The omoclavicular triangle, which is also called the subclavian triangle because the third part of the subclavian artery is located in it, is indicated on the surface of the neck by the supraclavicular fossa which is also the lowest portion of the posterior triangle.

Why is the neck divided into triangles?

The use of the divisions described as the triangles of the neck permit the effective communication of the location of palpable masses located in the neck between healthcare professionals. The common swellings anterior of the midline are: Enlarged submental lymph nodes and sublingual dermoid in the submental region.

What is the other name of subclavian triangle?

The subclavian triangle (or supraclavicular triangle, omoclavicular triangle, Ho's triangle), the smaller division of the posterior triangle, is bounded, above, by the inferior belly of the omohyoideus; below, by the clavicle; its base is formed by the posterior border of the sternocleidomastoideus.

What are the triangles in front of 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 are the contents of the supraclavicular triangle?

• anterior: posterior border of sternocleidomastoid.
• posterior: anterior border of trapezius.
• superiorly: inferior belly of omohyoid.
• floor: first rib, scalenus medius and first slip of serratus anterior.
• roof: skin, superficial fascia, platysma and investing layer of deep cervical fascia.

SubClavian Triangle

Where is the supraclavicular triangle?

The supraclavicular 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).

Why Suprasternal space is called space of Burns?

The suprasternal space, which is also known as the “Burns space,” is a narrow space between the superficial and deep layers of the investing layers of the deep cervical fascia superior to the manubrium of the sternum (13).

What are the triangles of the back?

The lumbar triangle can refer to either the inferior lumbar (Petit) triangle, which lies superficially, or the superior lumbar (Grynfeltt) triangle, which is deep and superior to the inferior triangle.

What is the posterior triangle?

The posterior triangle has the following 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.

What is submandibular triangle?

The submandibular triangle (or submaxillary or digastric triangle) corresponds to the region of the neck immediately beneath the body of the mandible.

What is supraclavicular fossae?

The supraclavicular fossa (SCF) is defined as the concavity found just over the clavicle, and it is a subdivision of the posterior triangle of the neck. The sternocleidomastoid muscle and the omohyoid muscles constitute the anterior and superomedial borders, respectively.

Where is the Subclavicular?

The subclavian vein is a continuation of the axillary vein, which is located under the arm. The subclavian vein extends along the medial (middle) side of a muscle called the anterior scalene muscle.

In which triangle is subclavian vein?

The omoclavicular triangle, which is also called the subclavian triangle because the third part of the subclavian artery is located in it, is indicated on the surface of the neck by the supraclavicular fossa which is also the lowest portion of the posterior triangle. This triangle is clinically relevant.

Where is the origin of the sternocleidomastoid?

Sternocleidomastoid Attachments

It originates on the anterior surface of the manubrium, and the superior border and anterior surface of the medial third of the clavicle. The SCM converges into one point and inserts on the lateral surface of the mastoid process and the nuchal line of the occipital bone.

What is internal jugular?

The internal jugular vein is a paired venous structure that collects blood from the brain, superficial regions of the face, and neck, and delivers it to the right atrium. The internal jugular vein is a run-off of the sigmoid sinus.

What is a Level V lymph node?

This refers to the lymph nodes located in the posterior triangle of the neck. These include the spinal accessory, transverse cervical, and supraclavicular group of nodes. Level V is bound anteriorly by the posterior border of the sternocleidomastoid muscle and posteriorly by the anterior border of the trapezius muscle.

Where is the omohyoid muscle?

The omohyoid muscle is an infrahyoid muscle of the neck that is innervated by the ansa cervicalis of the cervical plexus receiving fibers from the ventral rami of C1–C3 spinal nerves. The omohyoid is a paired, flat strap of muscle that is made up of superior and inferior bellies joined by an intermediate tendon.

Where are scalene muscles?

The scalene muscles are located deep in relation to the sternocleidomastoid muscle, lateral to the cervical spine, connecting the vertebrae to the first two ribs. The deep fascia or prevertebral fascia envelop the scalene muscles.

What is marcille triangle?

The Marcille's fossa or Marcille's Triangle is an anatomical region located in the vicinity of the lateral part of the fifth lumbar vertebra, the medial border of the psoas muscle laterally and the cephalad surface of the ala of the sacrum [11] .

What is Triangle auscultation?

The triangle of auscultation is a relative thinning of the musculature of the back, situated along the medial border of the scapula which allows for improved listening to the lungs.

What is in the triangular space?

The triangular space is an anatomic interval medial to the quadrangular space. Its borders are formed by the long head of the triceps laterally, the teres minor superiorly, and the teres major inferiorly. The circumflex scapular artery, a branch of the scapular artery, passes through the triangular space.

What does suprasternal mean?

: situated above or measured from the top of the sternum suprasternal height.

What is Buccopharyngeal fascia?

The buccopharyngeal fascia is the component of the middle layer of the deep cervical fascia that invests the outside of the pharyngeal constrictors and buccinator muscles.

What is alar fascia?

The alar fascia is a thin fibroareolar membrane separating the (anterior) true retropharyngeal space from the (posterior) danger space. It is the ventral component of the deep layer of the deep cervical fascia.