Exam 38: Upper Digestive Tract

The lining of the digestive system consists of three layers.

Which of the following is not a duct leading from the salivary glands to the oral cavity?

The upper esophageal sphincter is called the cardiac sphincter because it is just posterior to the heart.

The numerous small elevations on the surface of the tongue that support taste buds are called:

Match each of the following structures with its corresponding description or location. -central part of the stomach

In addition to enamel, the outer shell of the tooth has two additional dental tissues: dentin and gingivae.

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

Even though the structure of the GI tract changes from one section to another, the composition and structure of the four layers remain the same.

One of the functions of the stomach is to kill pathogens that enter the body in food.

The cheeks are formed in large part by the buccinator muscles.

Meissner plexus is found in which layer of the GI wall?

Match each of the following structures with its corresponding location or description. -Innermost layer of the GI tract; contains the lamina propria

The pharynx functions in two systems. Name the systems and explain the function in each system.

The mucosa is actually made up of two layers: the mucous epithelium and the lamina propria.

The hard palate consists of portions of:

The sublingual salivary glands can have as many as 20 ducts draining their secretions into the mouth.

The tricuspids are the last of the permanent teeth to appear, usually erupting sometime after 17 years of age.

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

The hard palate is composed of two maxillae: the ethmoid and sphenoid bone.

Which of the following is not a main part of the tooth?