a&p ch 16

Four tunics of digestive tract

1. mucosa 2. submucosa 3. muscularis 4. serosa/adventitia

Movement of molecules from the digestive tract into the circulation or lymphatic system

Absorption

Intrinsic factor binds with vitamin ______ and makes it more readily absorbed by the small intestine.

B12

Which of the following is NOT a type of tooth found in the normal adult mouth?

Dentin

Breakdown of large organic molecules into their component parts

Digestion

Process by which waste products are removed from the body

Elimination

The intake of solid or liquid food into the stomach

Ingestion

The basic functions of the digestive system include which of the following?

Ingestion Digestion Absorption

Select the types of teeth found in the normal adult mouth.

Molars Canines Premolars Incisors

Place the following structures in the order that food will pass through, beginning with the site of ingestion.

Mouth Pharynx esophagus stomach small intestine large intestine

Identify the organ of the digestive system that is composed of both endocrine and exocrine tissue located posterior to the stomach.

Pancreas

Identify the organs of the digestive system that are considered accessory organs.

Pancreas Liver Salivary glands

What is the semifluid material within the stomach that is a mixture of ingested food and gastric secretions called?

chyme

The initial segment of the small intestine is called the ______.

duodenum

The acellular substance that protects the tooth against abrasion and acids produced by bacteria is

enamel

What is the acellular substance that covers the dentin of the tooth crown called?

enamel

The major sites of absorption in the small intestine are the

jejunum and duodenum

The digestive tract begins with the ______.

oral cavity

What is the primary function of the stomach?

storage and mixing chamber

The structural features of the small intestine that serve to increase surface area to allow for greater digestion and absorption include the circular folds, the __________, and the microvilli

villi

The three phases of deglutition in order from beginning to end

voluntary pharyngeal esophageal