Suprapleural membrane

Suprapleural Membrane (also known as Sibson's Fascia) is a structure in the human body that plays a crucial role in the respiratory system. It is a fibrous tissue that covers the apex of each lung and extends into the neck.

Etymology

The term "Suprapleural Membrane" is derived from the Latin words "supra" meaning above, and "pleura" referring to the membranes surrounding the lungs. The alternative name, "Sibson's Fascia", is named after the British anatomist Francis Sibson who first described it in the 19th century.

Structure

The Suprapleural Membrane is a thick, fibrous layer of tissue that covers the apex of the lung. It extends from the thoracic cavity into the neck, reaching as high as the level of the seventh cervical vertebra. The membrane is firmly attached to the inner border of the first rib and the transverse process of the seventh cervical vertebra.

Function

The primary function of the Suprapleural Membrane is to protect the delicate tissues of the lung apex from potential damage caused by the collarbone and first rib. It also helps to maintain the position of the lung apex within the thoracic cavity.

Clinical Significance

Damage or disease affecting the Suprapleural Membrane can have serious implications for respiratory function. Conditions such as pleural effusion, pneumothorax, and lung cancer can all potentially involve the suprapleural membrane.

See Also

• Pleura
• Thoracic cavity
• Respiratory system