Investing layer of deep cervical fascia

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Investing Layer of Deep Cervical Fascia[edit | edit source]

Diagram of the deep cervical fascia, showing the investing layer.

The investing layer of deep cervical fascia is a component of the deep cervical fascia that envelops the neck, providing a protective and supportive structure for the muscles, vessels, and nerves within the cervical region. This fascia is a key anatomical structure in the neck, playing a crucial role in compartmentalizing the neck and facilitating the movement of the neck structures.

Anatomy[edit | edit source]

The investing layer is the most superficial part of the deep cervical fascia. It encircles the neck, starting from the spinous processes of the cervical vertebrae and extending anteriorly to the hyoid bone.

Attachments[edit | edit source]

The investing layer attaches superiorly to the external occipital protuberance and the superior nuchal line of the occipital bone. Inferiorly, it attaches to the spine of the scapula, the acromion, the clavicle, and the manubrium of the sternum.

Enclosures[edit | edit source]

This fascia encloses several important structures:

Function[edit | edit source]

The investing layer of deep cervical fascia serves several functions:

  • Protection: It provides a protective sheath for the muscles and glands it encloses.
  • Support: It supports the vascular and nervous structures of the neck.
  • Compartmentalization: It helps compartmentalize the neck, separating the anterior triangle from the posterior triangle of the neck.

Clinical Significance[edit | edit source]

The investing layer is clinically significant in the spread of infections and tumors within the neck. Its continuity and attachments can influence the pathways through which infections spread, such as in cases of cervical lymphadenitis or parotitis.

Related Pages[edit | edit source]


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Contributors: Prab R. Tumpati, MD