Pharyngeal aponeurosis

Pharyngeal aponeurosis is a fibrous layer of tissue that forms the outermost layer of the pharynx. It is a key component of the pharyngeal wall, which also includes the pharyngeal muscles, pharyngeal mucosa, and pharyngeal submucosa.

Structure

The pharyngeal aponeurosis is a dense, fibrous layer that provides structural support to the pharynx. It is composed primarily of collagen and elastin fibers, which give it its strength and elasticity. The aponeurosis is attached superiorly to the base of the skull and inferiorly to the esophagus and larynx.

Function

The primary function of the pharyngeal aponeurosis is to provide structural support to the pharynx, allowing it to maintain its shape and resist the forces generated during swallowing and speech. It also serves as an attachment site for the pharyngeal muscles, which are responsible for the movement of the pharynx during these activities.

Clinical significance

Damage or disease affecting the pharyngeal aponeurosis can lead to a variety of clinical conditions. For example, pharyngeal diverticulum, a condition in which a pouch forms in the pharyngeal wall, can occur if the aponeurosis is weakened. Similarly, pharyngeal cancer can spread to the aponeurosis, affecting its function and potentially leading to difficulty swallowing or changes in voice.

See also

• Pharynx
• Pharyngeal muscles
• Pharyngeal mucosa
• Pharyngeal submucosa