Anatomy of the Digestive System

Question 1

intra- and extracellular digestion

Answer 1

intracellular digestion involves the oxidation of glucose and fatty acids to make energy
extracellular digestion occurs in the lumen of the alimentary canal

Question 2

mechanical digestion

Answer 2

this is the physical breakdown of large food particles into smaller food particles

Question 3

chemical digestion

Answer 3

this is the enzymatic cleavage of chemical bonds, such as the peptide bonds of proteins or the glycosidic bonds of starches

Question 4

pathway of the digestive tract

Answer 4

oral cavity > pharynx > esophagus > stomach > small intestine > large intestine > rectum

Question 5

the accessory organs of digestion

Answer 5

salivary glands, pancreas, liver, and gallbladder

Question 6

the enteric nervous system

Answer 6

this is located in the wall of the alimentary canal and controls peristalsis.

• its activity is upregulated by the parasympathetic nervous system
• downregulated by the sympathetic NS