In this electron micrograph, many adjacent mitochondria are visible within the muscle cell. Itâs no coincidence that they are located close to one another â they do that in order to share glucose, amino acids and fatty acids in order to distribute the production of ATP across a coordinately linked network.
Swallowing involves roughly 50 muscles and many nerves, to move food and drink from the mouth into the stomach. Swallowing disorders, also called dysphagia, occur when nerve control or structures involved in the process are disrupted or not functioning properly. Many conditions can cause swallowing problems, among them: 1  Head, neck or chest injury. 2  Cancer of the head, neck, or food tube (esophagus) , or treatment of these cancers.
Dysphagia is the medical term for the symptom of difficulty swallowing, derived from the Latin and Greek words meaning difficulty eating. Mechanism of swallowing Swallowing is a complex action.