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