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2. Nutcracker esophagus - Wikipedia

   en.wikipedia.org/wiki/Nutcracker_esophagus

   Nutcracker esophagus is characterized as a motility disorder of the esophagus, meaning that it is caused by abnormal movement, or peristalsis of the esophagus. [2] People with motility disorders present with two main symptoms: chest pain or difficulty with swallowing. Chest pain is the more common.

3. Control of ventilation - Wikipedia

   en.wikipedia.org/wiki/Control_of_ventilation

   The ventral respiratory group controls voluntary forced exhalation and acts to increase the force of inhalation. Regulates rhythm of inhalation and exhalation. dorsal respiratory group (solitary nucleus). The dorsal respiratory group controls mostly movements of inhalation and their timing. Pons pneumotaxic center.

4. Peristalsis - Wikipedia

   en.wikipedia.org/wiki/Peristalsis

   A simplified image showing Earthworm movement via peristalsis The earthworm is a limbless annelid worm with a hydrostatic skeleton that moves by peristalsis. Its hydrostatic skeleton consists of a fluid-filled body cavity surrounded by an extensible body wall.

5. Aerobic conditioning - Wikipedia

   en.wikipedia.org/wiki/Aerobic_conditioning

   Aerobic conditioning is the use of continuous, rhythmic movement of large muscle groups to strengthen the heart and lungs (cardiovascular system), [1] as well as changes to the skeletal muscles. [2]

6. Incentive spirometer - Wikipedia

   en.wikipedia.org/wiki/Incentive_spirometer

   An incentive spirometer is a handheld medical device used to help patients improve the functioning of their lungs. By training patients to take slow and deep breaths, this simplified spirometer facilitates lung expansion and strengthening. Patients inhale through a mouthpiece, which causes a piston inside the device to rise.

7. Work of breathing - Wikipedia

   en.wikipedia.org/wiki/Work_of_breathing

   The normal relaxed state of the lung and chest is partially empty. Further exhalation requires muscular work. Inhalation is an active process requiring work. [4] Some of this work is to overcome frictional resistance to flow, and part is used to deform elastic tissues, and is stored as potential energy, which is recovered during the passive process of exhalation, Tidal breathing is breathing ...