Digestive System Study Guide

Question 1

Mechanical digestion

Answer 1

the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasm

Question 2

Chemical digestion

Answer 2

the breakdown of large insoluble food molecules into small water-soluble food molecules so that they can be absorbed into the watery blood plasma

Question 3

Enzymes

Answer 3

a substance produced by a living organism which acts as a catalyst to bring about a specific biochemical reaction

Question 4

Villi

Answer 4

any of the fingerlike or threadlike projections from the surface of certain membranous structures, typically serving to increase surface area and facilitate the passage of fluid or nutrients.

Question 5

Peristalsis

Answer 5

the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wave-like movements that push the contents of the canal forward.