Do Now: None Homework Agenda Video-man drinks drano Mechanical vs. Chemical digestion Digestion diagram Objective I can summarize the functions of the (DS) I can identify the different types of digestion in each organ of DS Do Now: Do Now  Pick up a digestive system diagram and label what you know! Homework None Did you know? Mrs. Sanford is Available for Tutoring every Mon and Wed!

Do Now: none Homework Do Now Agenda Quizizz Video-digestion Digestion vocabulary Objective I can summarize the functions of the digestive system I can identify the different types of digestion in each organ of the digestive system Do Now: Homework none Do Now  Pick up a digestive system vocabulary worksheet

The Digestive System

EWW!!! What is that?? http://www.youtube.com/watch?v=Uzl6M1YlU3w https://www.youtube.com/watch?v=Wu2iJseYlOQ https://www.youtube.com/watch?v=VwrsL-lCZYo https://www.youtube.com/watch?v=HBIYwiktPsQ

Functions Digest the food we eat Provides body with materials to grow and repair tissues. Provides energy for everything you do.

Chemical Digestion When chemicals in our body take large molecules & break them down into nutrients our body can send through our blood Saliva, stomach acid do this

Chemical Digestion Demo… Put skittle in your mouth DO NOT CHEW OR MOVE WITH TONGUE *Remember what color you had  After about 30 seconds take it out…this is chemical digestion. Your saliva has broken down the sugar molecules so that they can be absorbed into your blood

The physical breaking and crushing of food Mechanical Digestion The physical breaking and crushing of food Teeth, tongue, movement of smooth muscle in peristalsis (squeezing of tubes to move/crush food) do this

Mechanical/Physical Digestion Now Chew the skittle & move around with your tongue! This is physical or mechanical digestion! Breaking the food down into smaller pieces by ripping, crushing, and tearing it.

Components Esophagus Stomach Small Intestine Large Intestine Gall bladder Liver Pancreas

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Teeth and mouth- Breaks food down into smaller pieces Salivary glands- produces saliva

Esophagus the tube that connects your mouth and stomach

Stomach A stretchy bag that holds your food after you eat Helps to break food into smaller pieces you can use for energy

Esophagus Stomach

Small Intestine Tube that is 20 feet long. Where nutrients is absorbed into the blood. Food stays in your small intestine for 4 to 8 hours

Small Intestine

Large Intestine Tube that is 5 feet long Gets waste from small intestine and Liquids are absorbed here Waste stays for 10 to 12 hours

Large Intestine

Gall Bladder Storage tank for bile (a greenish-yellow liquid) that helps your body break down and use fats Located under your liver Shaped like a pear

Gall Bladder

Liver Factory for antibodies and bile Stores vitamins and sugars until your body needs them

Liver

Pancreas Helps you digest food by breaking down sugars

Rectum- Final section of LI where waste is compressed into solid form Anus- Where waste is eliminated from the body.

You have a trap door called the epiglottis to cover your windpipe when you swallow.

Your homework… The Journal of a Hamburger Write the process of mechanical digestion as it goes through the mouth, esophagus, stomach, small intestine, large intestine, and rectum. Use information from the Magic School Bus to complete for tomorrow. (First column only!)

The Magic School Bus! Complete the diagram as your watching! http://www.gamequarium.org/dir/SqoolTube_Videos/Science/Human_Body/Digestive_System/magic_school_bus_for_lunch_9673.html

Healthy Habits Eat foods that are high in fiber like fruits and vegetables

Drink plenty of water

Chew your food completely before you swallow

Avoid foods high in fat

Interesting Facts Food is in your digestive system for about 24 hours

Your stomach stretches when you eat like a balloon being filled with air

Your stomach mashes your food the way a baker kneads dough for bread.