As differential pressure increases, a magnet attached to either a piston or rubber diaphragm moves. Capacitive transducers use electrostatic fields between a conductive diaphragm and a backing plate. During exhalation the diaphragm and intercostal muscles relax. The space above this inlet and under the thoracic diaphragm is termed the abdominal cavity. Bending wave transducers use a diaphragm that is intentionally flexible. The contracting diaphragm pushes the abdominal organs downwards. The dynamic pressure is then determined using a diaphragm inside an enclosed container. The horse's respiratory system consists of the nostrils, pharynx, larynx, trachea, diaphragm, and lungs. The perineum is below the pelvic diaphragm and between the legs. Helium is used as a pressurant, with an elastomeric diaphragm assisting expulsion. The tube ends in a chamber sealed by a diaphragm. Usually used as a seat, stem packing, diaphragm and gasket. It supplies the thoracic diaphragm, enabling breathing. The left kidney sits below the diaphragm and posterior to the spleen. This action helps develop a strong diaphragm and deep breathing using the entire lung volume.