Answered: Pancreatic juices, saliva, and bile are…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Pancreatic juices, saliva, and bile are used only for mechanical digestion? A. True B. False

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Mechanical digestion comprises physically breaking down food items into smaller chunks in order for chemical digestion to proceed more quickly. During mechanical digestion, food is broken down physically but not chemically. Teeth are used to chew and break down food in mechanical digestion.

Digestive enzymes further degrade the molecular structure of ingested substances into a state that can be absorbed into the bloodstream during chemical digestion. Food is broken down mechanically through peristalsis and segmentation, which are muscle contractions.

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