Terminology-03

Terminology-03 - Terminology BIOL 112-546; 547 Digestive...

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Terminology – BIOL 112-546; 547 Digestive System – Fuel for Life Osmoregulation, the Excretory System 1. Ingestion – is the act of eating. Mechanical fragmentation (chewing or processing food in the gizzard) breaks food into smaller pieces that can be chemically processed during digestion. 2. Digestion – is the chemical process of breaking down macromolecules to their component “building blocks”. 3. Absorption – the process by which cells absorb the monomers resulting from digestion. 4. Elimination – undigested waste material leaves the digestive system. 5. Salivary amylase – an enzyme present in the saliva which digests carbohydrates. 6. Bolus – Food which is chewed and shaped into a ball. 7. Peristalsis – A series of organized muscle contractions that occur throughout the digestive tract. They are responsible for moving food along the digestive tract. 8. Parietal cells – Cells in the gastric gland which secrete hydrochloric acid. Hydrochloric acid breaks down the cellular matrix of food and kills most bacteria that may have been
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Terminology-03 - Terminology BIOL 112-546; 547 Digestive...

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