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Anatomy of the larynx and trachea
Anatomy of the lymphatics of the neck
Anatomy of the pharynx and esophagus
Anatomy of the thyroid and parathyroid glands
Bones of the neck
Deep structures of the neck: Prevertebral muscles
Deep structures of the neck: Root of the neck
Fascia and spaces of the neck
Superficial structures of the neck: Anterior triangle
Superficial structures of the neck: Cervical plexus
Superficial structures of the neck: Posterior triangle
The structures found in the neck are surrounded by a layer of subcutaneous tissue called the superficial fascia, while there are also layers of deep cervical fascia which distribute the structures in the neck into different compartments.
These fascial layers create different anatomical spaces in the neck, and dictate where an infection may spread if it starts in one of these compartments.
So, let’s take a look at the different fascia layers of the neck. You can think of fascia as a pair of thin stockings made of connective tissue that support and bind together different parts of the body, including the neck.
Now, the neck actually has two pairs of stockings on top of each other: the superficial fascia, which sits right underneath our skin, and the deep fascia, which is deep to or beneath the superficial fascia, and it surrounds muscles and viscera organizing them into compartments.
This fascia is usually thinner than in other regions, especially anteriorly, and it contains cutaneous nerves, blood and lymphatic vessels, superficial lymph nodes and variable amounts of fat.
Anterolaterally, it contains the platysma, which is a thin sheet of muscle that covers the anterolateral portion of the neck. Inferiorly, the platysma attaches to the deep fascia that covers the superior parts of pectoralis major and deltoid muscles, with its fibers moving superomedially over the clavicle and attaching superiorly to the inferior border of the mandible, and skin and subcutaneous tissues of the lower face.
The anterior borders of the two platysma muscles join together over the chin and blend with the facial muscles but inferiorly, the fibers remain separated, leaving a gap anterior to the larynx and trachea.
Fascia is a type of connective tissue that surrounds and supports the muscles, organs, and other tissues of the body. It comprises collagen and elastin proteins, and has a very important role in protecting the body against injuries. The neck has superficial fascia which is just beneath the skin, and deep fascia which is deeper, and surrounds muscles and neck structures, organizing them into compartments.
The spaces of the neck are the areas where the fascia is thin and flexible. This allows for greater movement and flexibility in the neck region, and can help predict the mechanism of spread of infections in surrounding tissues.
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