Somatopleuric mesenchyme

Somatopleuric mesenchyme is a type of mesenchymal tissue that originates from the embryonic somatopleure. It plays a crucial role in the development of various structures in the body, including the limbs, heart, and lungs.

Origin

The somatopleuric mesenchyme is derived from the lateral plate mesoderm, which is one of the three primary germ layers in the early embryo. The lateral plate mesoderm splits into two layers: the splanchnopleuric mesenchyme (which contributes to the formation of the visceral organs) and the somatopleuric mesenchyme.

Role in Development

The somatopleuric mesenchyme contributes to the formation of several structures in the body:

• Limb Formation: The somatopleuric mesenchyme forms the limb buds, which later differentiate into the bones, muscles, and connective tissues of the limbs.
• Heart Formation: The somatopleuric mesenchyme contributes to the formation of the pericardial sac and the epicardium, the outermost layer of the heart.
• Lung Formation: The somatopleuric mesenchyme forms the pleural sacs that surround the lungs.

Clinical Significance

Abnormalities in the somatopleuric mesenchyme can lead to various developmental disorders, such as congenital limb deformities, congenital heart defects, and pulmonary hypoplasia.

See Also

• Mesenchyme
• Somatopleure
• Splanchnopleure
• Mesoderm
• Embryo