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.
Difficulty swallowing is also called dysphagia. It is usually a sign of a problem with your throat or esophagus âthe muscular tube that moves food and liquids from the back of your mouth to your stomach.Although dysphagia can happen to anyone, it is most common in older adults, babies, and people who have problems of the brain or nervous system.f you have dysphagia, you may: 1  Have problems getting food or liquids to go down on the first try. 2  Gag, choke, or cough when you swallow. 3  Have food or liquids come back up through your throat, mouth, or nose after you swallow. 4  Feel like foods or liquids are stuck in some part of your throat or chest.