Exam 28: A: Anatomy of the Digestive System

Both the stomach and gallbladder contain folds called rugae.

The greater omentum is a fatty tissue covering the anterior surface of the intestines.

After food is digested,it enters the alimentary canal.

The lining of the digestive system consists of three layers.

The intramural plexus,which is also called the Auerbach plexus,is found in the muscularis layer.

The hardest,most stable tissue in the body is the enamel of the tooth.

The muscularis layer of the wall of the GI tract consists of a single layer of circular muscle.

There are 32 permanent teeth.

The pancreas is an essential organ of the digestive system.

Both the large and small intestine have microvilli.

The brush border of the small intestine is formed by about 1700 ultra-fine microvilli per cell.

When the lips are closed,the line of contact is called the oral fissure.

Digestion must occur so food can pass through the wall of the alimentary canal.

A congenital condition in which the frenulum is too short to allow freedom of tongue movement is called ankyloglossia.

Anal fissures are a more serious condition than an anal fistula.

The mucosa is made up of three layers: the mucous epithelium,the lamina propria,and the muscularis mucosae.

During deglutition and speech,the only muscles of the tongue that contract are the intrinsic muscles.

An overly full stomach can push against the small intestine and obstruct the movement of food.

The duodenum,jejunum,and ileum each make up about one third of the length of the small intestine.

The walls of the stomach and the small intestine have three layers of muscle tissue.