Digestive System

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Digestion is the break-down of naturally occurring foodstuffs into diffusable form. OR Digestion is any change which makes the foods soluble and of such chemical nature that they can be absorbed throu

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1. It is a protein and is destroyed by heating 2. It acts only on one kind of substrate (specific) 3. It always forms the same end-products 4. It only speeds up reactions (catalyst) 5. It can be used

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1. Incisors (4) - Cutting and biting with sharp, chisel-like edges 2. Canines (4) - Holding and tearing with pointed, conical shape 3. Premolars (8) - Grinding and crushing with two cusps (bicuspid) 4

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Human adult dental formula: 2, 1, 2, 3 / 2, 1, 2, 3 = 32 teeth This represents: Incisors, Canines, Premolars, Molars for one half of each jaw. The wisdom teeth (last molars) appear at 17-20 years of a

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1. Enamel - Hardest substance covering the crown 2. Dentine - Forms bulk of tooth, harder than bone but softer than enamel 3. Cement - Bone-like structure covering and fixing the root 4. Pulp - Soft c

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1. Parotid glands - Located just in front of and beneath each ear 2. Submandibular glands - Lying close to inner side of lower jaw on each side 3. Sublingual glands - Located below the tongue All prod

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1. Moistens and lubricates mouth cavity and tongue for speaking/swallowing 2. Moistens and lubricates food for easier swallowing 3. Acts as solvent to stimulate taste buds 4. Helps food particles stic

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Peristalsis is the wave of constrictions caused by the circular muscles of the gut pushing the food along. It occurs through all regions of the gut (esophagus, stomach, intestines) to move food forwar