Define the following terms:

(a) Digestion

(b) Enzymes

(c) Peristalsis

(d) Dentition

(e) Defaecation

(f) Assimilation

(a) Digestion — Digestion is any change which makes the food soluble and of such chemical nature that it can be absorbed readily through living membranes.

(b) Enzymes — An enzyme is a protein that acts on a specific substance to form a specific end product. It best acts at a particular temperature and pH.

(c) Peristalsis — It is defined as the rhythmic contraction and relaxation of the muscles of the alimentary canal which pushes the food along the gut.

(d) Dentition — The arrangement of teeth in a particular species is called dentition.

(e) Defaecation — The expulsion of undigested remains of food from the alimentary canal is called defaecation.

(f) Assimilation — It is the conversion of the absorbed digested food into body material.