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The serous membranes have two segments - the visceral segment (which house the internal organs) and the parietal segment (which line the body wall). The serous membranes that take care of the lungs are called pleurae, and those that look after the abdominal cavity are called peritoneum (or peritoneal membranes).
lines a body cavity that does not open directly to the exterior, and it covers the organs that lie within the cavity. The layer attached to the cavity wall is called the parietal layer; the layer that covers and attaches to the organs inside the cavity is the visceral layer.