4/10/2024 0 Comments Are lymph nodes along back of neckThe posterior triangle of the neck can further divide into two smaller triangles by the inferior belly of the omohyoid muscle. The inferior boundary, which forms the base of the posterior triangle, is defined by the superior aspect of the middle one-third of the clavicle. The union of the trapezius and sternocleidomastoid muscles at the superior nuchal line of the occipital bone forms the apex of the posterior triangle. The anterior border of the trapezius delineates the posterior border. The anterior border forms by the posterior aspect of the sternocleidomastoid muscle. Distinct anatomic borders define the posterior triangle of the neck. The posterior triangle refers to a bilateral anatomic region that is on the posterolateral aspect of the neck. The posterior triangle of the neck occupies the posterior cervical region. The focus of this activity will be to describe the anatomy of the posterior cervical region, including the posterior triangle of the neck, and to relate the anatomy to important clinical considerations. Within these triangles, muscles, nerves, blood vessels, lymphatics, and adipose tissue are present. These triangles are found deep to the skin, subcutaneous tissue, superficial cervical fascia, and platysma muscle and span the entire length of the neck. The two primary regions of the neck are the anterior and posterior triangles whose borders are defined by readily identifiable anatomic structures. From a clinical standpoint, the head and neck maintain several critical neurovascular structures that have essential functions and potential disastrous surgical consequences if violated. The neck subdivides into smaller regions, zones, and compartments to help with maintaining the organization of this highly complex area. ![]() The anatomy of the head and neck is complicated due to the sheer number of fine structures in that region and many of which have variable depth and course.
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