What is posterior triangle of neck?

What is posterior triangle of neck?

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 passes through the posterior triangle of the neck?

Within the posterior triangle, the external jugular vein pierces the investing layer of fascia and empties into the subclavian vein. The subclavian vein is often used as a point of access to the venous system, via a central catheter.

What nerves are in posterior triangle of neck?

You find several nerves in the posterior triangle of the neck, too:

  • Spinal accessory nerve (cranial nerve XI)
  • Roots of the brachial plexus.
  • Suprascapular nerve.
  • Cutaneous branches of the cervical plexus: Lesser occipital nerve. Great auricular nerve. Transverse cervical nerve. Supraclavicular nerve.
  • Phrenic nerve.

What is the posterior neck region called?

The region posterior to the anterior borders of (i.e., corresponding to the area of) the trapezius is the posterior cervical region. Its main content is the trapezius muscle which runs down to the posterolateral aspect of the trunk. The sub-occipital triangle or region lies deep to the posterior cervical region.

What causes posterior cervical lymph nodes to swell?

Lymph node inflammation can occur for a variety of reasons. Any infection or virus, including the common cold, can cause your lymph nodes to swell. Cancer can also cause lymph node inflammation. This includes blood cancer, such as leukemia and lymphoma.

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.

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What makes up 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 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 are the divisions triangles of the neck?

The submandibular and submental triangles are the superior divisions, while the muscular and carotid triangles compose the inferior divisions of this anterior neck compartment. The submandibular triangle is delineated by the inferior border of the mandible and the anterior and posterior bellies of the digastric muscle.

What lymph nodes are in the posterior triangle?

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.

What muscles make up the occipital triangle?

Anatomical terminology The occipital triangle, the larger division of the posterior triangle, is bounded, in front, by the Sternocleidomastoideus; behind, by the Trapezius; below, by the Omohyoideus. Its floor is formed from above downward by the Splenius capitis, Levator scapul, and the Scalenus medius and posterior.

What is the submandibular 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.

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What separates the anterior and posterior triangles of the neck?

The sternocleidomastoid muscle divides the neck region into posterior and anterior triangles.

What’s the back of your neck called?

nape The nape is the back of the neck. In technical anatomical/medical terminology, the nape is also called the nucha (from the Medieval Latin rendering of the Arabic spinal marrow).

What are the signs that you have a cancerous lymph node?

What Are Signs and Symptoms of Cancerous Lymph Nodes?

  • Lump(s) under the skin, such as in the neck, under the arm, or in the groin.
  • Fever (may come and go over several weeks) without an infection.
  • Drenching night sweats.
  • Weight loss without trying.
  • Itching skin.
  • Feeling tired.
  • Loss of appetite.

Can you feel posterior cervical lymph nodes?

The cervical lymph nodes sit deep inside the neck. For this reason, most people without medical training are unable to feel them, even when they are swollen. However, a doctor may be able to feel one or more bumps beneath the skin when examining the neck region.

When should you worry about a swollen lymph node?

When to see a doctor See your doctor if you’re concerned or if your swollen lymph nodes: Have appeared for no apparent reason. Continue to enlarge or have been present for two to four weeks. Feel hard or rubbery, or don’t move when you push on them.

What is carotid triangle?

The carotid 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 contained within the submandibular triangle?

The anterior part contains the submandibular gland, superficial to which is the anterior facial vein, while imbedded in the gland is the facial artery and its glandular branches. Beneath the gland, on the surface of the Mylohyoideus, are the submental artery and the mylohyoid artery and nerve.

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How do you learn the triangle of the neck?

What Innervates the Sternocleidomastoid?

The sternocleidomastoid is innervated by the accessory nerve. It is given the name sternocleidomastoid because it originates at the manubrium of the sternum (sterno-) and the clavicle (cleido-) and has an insertion at the mastoid process of the temporal bone of the skull.

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 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 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.