(picnic table image by Horticulture from Fotolia.com) Standard-size A-frames use five to seven lengths of timber for the table top and two to three lengths for the seats. A standard table top height is about 30 inches while the height of the seat top should be about 16-18 inches.
HealingWell.com Forum > Diseases & Conditions > GERD - Heartburn > Prokinetic agents - drugs that tighten the lower esophageal sphincter. These drugs work by tightening the lower esophageal sphincter, which helps prevent acid from washing back up into the esophagus. They also slightly increase the contractions of the esophagus and the stomach to help empty the stomach faster. Prokinetic agents include metoclopramide (also known as Reglan), bethanechol (Duvoid) and tegaserod (Zelnorm).
Esophagus. The esophagus is a hollow muscular tube that connects the back of the throat to the top of the stomach. In an adult, this tube normally ranges from about 10-14 inches in length, and one inch in diameter. At rest, the esophagus is closed but opens readily to accept food and liquids. The muscles in the upper portion of the esophagus are under voluntary control. The remaining portion consists of smooth muscle like the rest of the digestive tract and is not under voluntary control. An internal image of a healthy esophagus. To keep food from coming back up from the stomach, the esophagus has two circular bands of involuntary muscle.