In the anatomy of mammals, the diaphragm is a shelf of muscle extending across the bottom of the ribcage. The diaphragm separates the thoracic cavity (with lung and heart) from the abdominal cavity ...

Pain in the diaphragm — the muscle that separates the chest from the abdomen — can happen for many reasons, such as an injury, pregnancy, and pneumonia. The diaphragm moves downward so the lungs can ...

The architectural design of our kidneys is amazingly complex, and culminates in the 3D structure of the glomerular filter. During filtration, plasma passes through a sieve consisting of a fenestrated ...