MBBS The Digestive System — practice questions

1. The alimentary canal, also called the gastrointestinal (GI) tract or gut, is a one-way tube from mouth to anus. 2. During life, with normal smooth muscle tone, it measures about 7.62 meters (25 feet) in length. 3. After death, once smooth muscle tone is lost, it stretches to closer to 10.67 meters (35 feet). 4. 2 meters, 15 meters, and 1 meter do not match the living-length figure of a typical adult's alimentary canal. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.1, p. 1087_

1. Five major peritoneal folds anchor different abdominal organs. 2. The greater omentum lies superficial to the small intestine and transverse colon, and the falciform ligament anchors the liver to the abdominal wall. 3. The lesser omentum suspends the stomach from the inferior border of the liver and provides a pathway for structures connecting to the liver. 4. The greater omentum lies over the small intestine and transverse colon, a different fold from the one suspending the stomach from the liver. 5. The mesentery anchors the small intestine except the duodenum, an unrelated attachment site. 6. The mesocolon attaches the transverse and sigmoid colon to the posterior wall, again a different fold from the one described here. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.1, p. 1092_

1. A person has two sets of teeth, or dentitions, over a lifetime. 2. The 20 deciduous teeth, or baby teeth, first begin to appear at about 6 months of age. 3. Between approximately age 6 and 12, these deciduous teeth are replaced by 32 permanent teeth. 4. Age ranges of 1 to 3, 15 to 18, or 20 to 25 do not match the age window given for this replacement process. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 23 "The Digestive System", section 23.3, p. 1101_