Digestive System Review

The alimentary canal extends, in its entirety, from 

• the mouth to the large intestine.
• the stomach to the small intestine.
• the liver to the gallbladder.
• the mouth to the anus.
• the anus to the pharynx.

The digestive system 

• ingests food, propels food, mechanically and chemically breaks down food, absorbs nutrients, and defecates the remainder.
• Mechanically and chemically assembles food from absorbed nutrients.
• sends cellular debris to lysosomes.
• absorbs nutrients in the mouth, pharynx, esophagus and stomach, and releases nutrients in the intestines.
• circulates nutrients throughout the body.

The correct sequence for the layers in the walls of the alimentary canal from innermost to outermost is the 

• mucosa, muscular layer, serosa, submucosa.
•  mucosa, submucosa, muscular layer, serosa.
• serosa, muscular layer, mucosa, submucosa.
• submucosa, mucosa, serosa, muscular layer
• serosa, muscular layer, submucosa, mucosa.

The __________ is the layer of the alimentary canal that absorbs nutrients

• mucosa
• submucosa
• muscular layer
• serosa
• subserosa

Peristalsis occurs in the digestive tract

• from the pharynx to the anus
• in the small and large intestines only
• in the stomach and small intestine only
• in the stomach, small intestine, and large intestine
• only in the rectum and anus

The teeth that are best adapted for biting off hunks of food are the

• incisors
• canines
• bicuspids
• molars
• premolars

The mechanical breakup of food particles in the mouth is called

• mastication
• salivation
• peristalsis
• absorption
• perturbation

The uvula is

• a type of tooth
• a projection from the soft palate
• a part of the female reproductive system
• part of the tongue
• a flap of tissue that keeps food from enetering the respiratory system

Because of their location, swollen palatine tonsils may interfere with

• breathing
• swallowing
• both breathing and swallowing
• neither breathing or swallowing
• defecating

Salivary amylase digests

• carbohydrates
• proteins
• fats
• vitamins
• all of the above