steps of the digestive system and be able to identify the ... · step 5: pancreas, liver, &...
TRANSCRIPT
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You will be able to explain the steps of the digestive system AND be able to identify the functions
the organs and tissues hold.
Lesson Objective:
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What would happen to your body over time if you stopped eating food?
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The Digestive System:•Turns food and liquids into the building blocks and fuel the body needs.
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Step 1: Saliva•Saliva (spit) is created. •Seeing and smelling something that looks good creates saliva.
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Step 2: Mouth & Salivary Glands•Salivary glands continue to make saliva. •Teeth break down food. •Tongue mixes it with saliva.
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Step 3: Esophagus•The esophagus connects your throat to your stomach.•Muscles in the esophagus contract, pushing the food down.
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Step 4: Stomach•Food is broken down further. •Digestive glands produce stomach acid. •Stomach acid breaks down the food into a semifluid.
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Step 5: Pancreas, Liver, & Gallbladder•Pancreas releases a digestive enzyme that helps break down proteins, carbohydrates, and fats. •Liver produces “bile”, a liquid that helps digest fats. •Gallbladder stores the bile that the liver creates.
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LiverGallbladder
Pancreas
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Step 6: Small Intestine •Breaks down the food into nutrients that the body can absorb. •Once it reaches the end of the small intestine, only some water and waste remains.
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How long do you think your
intestines are??
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•They are over 27 feet long!!•That’s nearly the length it takes to get a 1st down in football!
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Step 7: Large Intestine•Waste is pushed down into your rectum, eventually signaling you need to go to the bathroom. •Waste exits your body, nutrients stay in.
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Large Intestine Rectum
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The esophagus connects the ______ and the ______.A – Small Intestine, Large IntestineB – Throat, StomachC – Stomach, Small IntestineD – Tongue, Throat
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Saliva is the first step of the Digestive System. What creates it?A – Pancreas B – Liver C – Salivary Glands D – Esophagus
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What organ breaks down the food into nutrients that the body can actually absorb?A – Small IntestineB – Large IntestineC – Stomach D – Rectum
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The liver, pancreas, and _______ are all a part of the same step. A – Teeth B – Stomach C – Gallbladder D – Large Intestine
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What is the main purpose of the Digestive System?A – To break down food into nutrients.B – To break down food into waste. C – To create bile. D – To create saliva.