Thrombophlebitis Blood clots in the leg can become very dangerous; symptoms include swelling, redness, and leg tenderness. Transient ischemic attack (mini-stroke) Transient ischemic attacks cause headache, numbness, tingling, or weakness in the face, arm, or leg, and more.
serous membrane, one of the many thin sheets of tissue that line closed cavities of the body, such as the pleura lining the thoracic cavity, the peritoneum lining the abdominal cavity, and the pericardium lining the sac that encloses the heart.
The outer layer of a serous membrane is called the parietal layer and is always attached to the surrounding tissues. The inner layer is called the visceral layer and is firmly attached to the organ it covers. Among the most notable examples of serous membranes are the peritoneum (surrounding the intestines), the pleura (surrounding the lungs), and the pericardium (surrounding the heart).