The esophagus in the digestive system

When a corrosive substance, or a solid object is swallowed, it is most likely to lodge and damage one of these four points. The upper striated muscle, and upper esophageal sphincter, are supplied by neurons with bodies in the nucleus ambiguuswhereas fibers that supply the smooth muscle and lower esophageal sphincter have bodies situated in the dorsal motor nucleus.

The esophagus in the digestive system

The large intestine is a highly specialized organ that is responsible for processing waste so that emptying the bowels is easy and convenient. When food or drink is placed into a person's mouth, the body's nervous system detects this and the brain directs the UES to open allowing the food or drink to pass into the esophagus although this can sometimes be affected by strokes and other injuries. Transport through the esophagus is accomplished by the primary esophageal peristaltic contractions, which, as noted above, originate in the pharynx. The submucosa is a thick, loose fibrous layer connecting the mucosa to the muscularis. At the superior end of the esophagus is the upper esophageal sphincter that keeps the esophagus closed where it meets the pharynx. These contractions are produced by an advancing peristaltic wave that creates a pressure gradient and sweeps the bolus ahead of it. The upper sphincter is composed largely of a muscle that is closely associated with the larynx. By means of a series of muscular contractions called peristalsis, the esophagus delivers food to your stomach. The appendix is a small tube attached to the cecum. A Schatzki ring is fibrosis at the gastro-esophageal junction.

The other main type is an adenocarcinoma that occurs in the glands or columnar tissue of the esophagus. The appendix is a small tube attached to the cecum. The progress of the cancer is staged using a system that measures how far into the esophageal wall the cancer has invaded, how many lymph nodes are affected, and whether there are any metastases in different parts of the body.

Skeletal muscle is mostly found in the superior region of the esophagus to aid in the swallowing reflex while smooth muscle in the inferior esophagus pushes substances toward the stomach via peristalsis.

esophagus problems

The esophagus lies behind the trachea and heart and in front of the spinal column ; it passes through the diaphragm before entering the stomach. Rectum The rectum Latin for "straight" is an 8-inch chamber that connects the colon to the anus.

The upper parts of the esophagus and the upper esophageal sphincter receive blood from the inferior thyroid arterythe parts of the esophagus in the thorax from the bronchial arteries and branches directly from the thoracic aortaand the lower parts of the esophagus and the lower esophageal sphincter receive blood from the left gastric artery and the left inferior phrenic artery.

The other cases occur singly.

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Esophagus: Facts, Functions & Diseases