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Stomach

Digestive System

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Biology
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anatomy
Digestive system
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Digestive enzyme
Small intestine
Digestion
Carbohydrate digestion
Stomach
Gastric acid
Bile
Saliva
health

TheHumanDigestiveSystem Oral Cavity Chewing Saliva moistens food Saliva contains enzymes Esophagus Moves food to the stomach by peristalsis Stomach Sphincters control movement of food into and out of the stomach Stomach glands release gastric juices water, enzymes, mucus, acid Most food moves on to the small intestine within 4 hours Small Intestine Liver and pancreas secrete enzymes into the small intestine Digestion is completed Nutrients are absorbed through the intestinal walls Colon(Large Intestine) Bacteria produce some vitamins Vitamins absorbed into bloodstream Water is reabsorbed Feces move on to the rectum Carbohydrate Digestion Mouth Salivary amylase breaks starch into sugar Stomach pH is too low for amylase to work Small Intestine

Animal Nutrition

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Biology
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Digestive system
anatomy
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Digestion
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Small intestine
Stomach
Human gastrointestinal tract
nutrition
Secretin
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Campbell Biology 9th edition

Chapter Forty-One: Animal Nutrition Preface Nutrition: Food being taken in , taken apart, and taken up (Example: Bear chews skin muscles and other part of fish, breaking it down with acid and enzymes in digestive system and finally absorbing it into small molecules in its body) Animals eat other organisms (dead or alive) for energy and also the organic molecules used to assemble new molecules, cells and tissues. There are different types of animal diets; Herbivores: Animals that dine on mainly plants and algae (cattle, sea slugs, termites) Carnivores: Animals that dine on other animals (sharks, hawks,spiders) Omnivores: Animals which consume both plants and animals regularly (humans, crows, and cockroaches)

Digestive System

Subject: 
Biology
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anatomy
Digestive system
Biology
Medicine
Digestion
Digestive enzyme
Human gastrointestinal tract
Small intestine
Bile
Stomach
Gastro-
Pancreas
health

DIGESTIVE SYSTEM - Transfers nutrients, salts, H2O and vitamins in food from external to internal environment Anatomy: Digestive tract (gastrointestinal (GI) tract) Mouth -> Pharynx -> Esophagus -> Stomach -> Small intestine -> Large intestine -> Anus DIGESTIVE SYSTEM Digestive System: Mouth: - teeth = mastication (incisors, canines, molars) -3 pairs salivary glands secrete saliva: 1) moistens and lubricates food 2) amylase DIGESTIVE SYSTEM Digestive System Organs Pharynx and Esophagus - transport food and water to stomach - swallowing reflex: epiglottis As food approaches stomach, sphincter relaxes so food can go into stomach Sphincter closes -> Prevents acid reflux DIGESTIVE SYSTEM

Digestive System

Subject: 
Biology
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Digestive system
human anatomy
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Abdomen
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Digestive enzyme
Human gastrointestinal tract
Biological system
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Alexandra Odinlo IB Chemistry 1 August 26, 2013 Science and Human Nutrition Human Digestion Digestion?is the process of breaking down the foods that we eat into forms of energy that the body can use as energy. The Digestive process is one that involves the body?s biological mechanical works as well as chemical means to breakdown nutrients from different types of foods. Mechanical digestion?begins the digestion process. In your mouth as your teeth begin to mash food into smaller pieces to allow you to swallow them. Soon after saliva in your mouth bring about the chemical changes to your food. Chemical and mechanical parts of digestion work hand in hand toward the goal of providing nourishment for your body.

Digestive System

Subject: 
Biology
Rating: 
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Tags: 
anatomy
Digestive system
Biology
human anatomy
Organs
Abdomen
Digestion
Esophagus
Digestive enzyme
Stomach
Human gastrointestinal tract
Small intestine
health

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