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digestive system

digestive system

Digestive System, Part 1: Crash Course Anatomy & Physiology #33 digestive system Function of the Digestive System in Animals The primary functions of the GI tract include prehension of food and water; mastication, salivation, and swallowing skeletal system The Digestive System

smr automotive system thailand They release two chemicals, acetylcholine and adrenaline Acetylcholine causes the muscle layer of the digestive organs to contract with more

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