What is in the posterior triangle of the neck?

The subdivisions of the posterior triangle are occupied by the regional lymph nodes, the third part of the subclavian artery, suprascapular and transverse cervical branches of the thyrocervical trunk, external jugular vein, trunks of the brachial plexus and the fibers of the cervical plexus.

Which muscles are involved in the anterior and posterior triangles of the neck?

The outline of the carotid triangle is the anterior aspect of the sternocleidomastoid, the superior belly of the omohyoid, and the posterior belly of the digastric and stylohyoid muscles.

What structures can be seen in the anterior triangle of neck?

Contents. The contents of the anterior triangle include muscles, nerves, arteries, veins and lymph nodes. The muscles in this part of the neck are divided as to where they lie in relation to the hyoid bone. The suprahyoid muscles are located superiorly to the hyoid bone, and infrahyoids inferiorly.

What is posterior triangle in anatomy?

The posterior triangle of the neck is an anatomical area located in the lateral aspect of the neck. In this article, we shall look at the anatomy of the posterior triangle of the neck – its borders, contents, subdivisions, and any clinical relevance.

What does posterior neck mean?

posterior cervical region [TA] the back of neck, including the suboccipital region.

What muscle divides the neck into two major triangles?

sternocleidomastoid muscle
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 nerves are in the posterior triangle of the 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 are the posterior neck muscles?

The trapezius muscles largely define the shape and outline of the neck, both from behind (here are the two Now we’ll add the clavicles and the scapulae to the picture, and go round to the back again to look at three large muscles that shape the back of the neck: semispinalis, splenius, and trapezius.

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.

https://www.youtube.com/watch?v=wspfTwzn48c