A&P17 Digestive System

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 digestive system

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

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.

The _______ is the layer of the alimentary canal that absorbs nutrients.

• mucosa
• submucosa
• muscular layer
• serosa

Peristalsis occurs in the digestive tract

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

Activities of the digestive system generally increase when it is stimulated by

• sympathetic impulses
• parasympathetic impulses
• sensory impulses
• somatic impulses

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

• incisors
• canines
• bicuspids
• molars

The root canal of a tooth contains

• dentim
• cementum
• gingiva
• blood vessels and nerves

The mechanical breakup of food particles in the mouth is called

• mastication
• salivation
• peristalsis
• absorption

The uvula is

• a type of tooth
• a projection from the soft palate
• a flap of tissue that keeps food from entering the trachea
• part of the tongue