Mechanical and Chemical Digestion

Slides:

Advertisements

Similar presentations

Food, Food, Food is the Word

Advertisements

 First the apple goes in your mouth, then it is chewed into tiny pieces mixed with saliva(spit).

Digestion in the Mouth When food is chewed and mixed with saliva, it turns into a moist ball called a bolus. There are three pairs of salivary glands that.

The Digestive System. We all need energy to live We get it from different sources –Carbohydrates (sugars/starches) –Lipids (fats/oils) –Proteins (meat/lentils/beans)

Topic: Human Digestive System. The human digestive system is a system of organs and glands which digest and absorb food and its nutrients. There are two.

The Human Digestive System What do you already know? Complete the Digestive System Handout to the best of your ability without looking in any text or your.

Digestive System. The Digestive System At this station, you will: Compare mechanical and chemical digestion. Learn the parts of the digestive system.

Education Phase 3 Digestion. Food as a fuel The body requires energy from food. Our bodies act as a converter, releasing energy and nutrients from food.

The Digestive Process Caution: some pictures used in this presentation are actual photos of the human body.

The Digestive System Lab. During this lab you will come in contact with food and other lab equipment. You may NOT eat any of the food or misuse any of.

© BRITISH NUTRITION FOUNDATION 2013 (Foundation) The digestion process.

The Digestive System.  We have now started to look at various systems in the body and how individual organs make up these systems.  But how did we get.

PP  Breakdown of food into simpler molecules that can be absorbed by the body in one long tube from mouth to anus.

The Digestive System Oral cavity Pharynx Esophagus Liver Stomach

16-2 The Digestive Process Begins Parrot Book Pages

DIGESTIVE SYSTEM.

1. stages in food processing 1.ingestion 2.digestion 3.absorption 4.elimination 2. digestion - the process that breaks down food into small molecules.

2.2 THE DIGESTIVE SYSTEM.

Unit 2 Lesson 4 Digestion in the Mouth. Mechanical Digestion: Is the process of breaking down food into smaller pieces. In the mouth, this is done by.

The Human Digestive System What do you already know? Complete the Digestive System Handout to the best of your ability without looking in any text or your.

The Digestive System. Breaks down food into smaller particles so cells can use it Built around alimentary canal (one-way tube passing through body) Digestive.

The Digestive System The Functions of the Digestive System 1.Ingestion: when food enters the mouth 2.Digestion: when food is broken down 3.Absorption:

The Digestive System.

Digestive System. What’s it’s function? Breaks down food into molecules the body can use. Molecules are absorbed into the blood & carried throughout the.

The Upper Digestive System

Goal: To explain the difference between chemical and mechanical digestion while eating a cracker and describe where each takes place. Sci7: Th Feb 11 In.

THE DIGESTIVE SYSTEM.

Digestive System Breaking down food to be used by the body.

Digestive System Two types of digestion – Mechanical- your teeth, rip, break and crush food particles – Chemical- saliva contains enzymes that break down.

The Digestive Process Begins

DIGESTIVE SYSTEM.

Human Organ Systems Digestive System. Function of Digestive System 1. The breaking down of food into substances the body can use 2. Two kinds of digestion:

THE DIGESTIVE SYSTEM. MAIN ROLES OF THE DIGESTIVE SYSTEM: 1.To breakdown nutrients 2.To absorb nutrients This is necessary for growth and maintenance.

Chemical Digestion in the Mouth Biscuit Lab Summary Salivary glands found around your mouth produce saliva that begins chemical digestion of carbohydrates.

THE DIGESTIVE PROCESS BEGINS Chapter 2 Section 3 Pages

What happens to our food after we eat it?. Step 1: Mouth Mechanical digestion starts when we bite and chew our food Chemical digestion starts as saliva.

CHAPTER 48 SECTIONS 1 & 2 PP DIGESTIVE SYSTEM Warm-up: 5/14 What is the pathway for the respirator system, starting with the mouth and ending with.

Digestion Digestive System Digestion is the process of breaking food down into molecules small enough for the body to absorb.

Everybody Poops An introduction to your digestive system.

Mouth Did you know? The tongue moves food around in the mouth and from there it is crushed and slowly moves the esophagus. Amylase is the enzyme found.

Functions of the Digestive System Activities of Each Digestive Organ.

Digestive System Emily Thompson Jayce Landrum. Digestion  Digestion is the bodily process of breaking down food chemically and mechanically.  Nutrients.

Digestion Digestion is the process of breaking food down into molecules small enough for the body to absorb. Digestive system.

Your Digestive System The main role of the digestive system is to break down and absorb nutrients that are necessary for growth and maintenance.

Physical and Chemical Changes in the Digestive System Notes

Chapter 18.2a The Digestive System.

Mechanical and Chemical Digestion

Digestion 3 functions of the digestive system:

The digestion process (Foundation).

Digestive System Parts and Function

Unit 5 Notes: Oral Cavity, Esophagus & Stomach Details!

Section 38.2 The Digestive System

Unit 5 Notes: Digestion Basics, The Mouth, and The Esophagus

THE DIGESTIVE SYSTEM.

The Digestive System.

The Digestive System Food, Food, Food!!!!!!.

The Digestive System.

Breaks down food into nutrients.

Digestive System.

Digestive System Parts and Function

Unit 2: Digestion in The Mouth & Esophagus

The digestion process (Foundation).

The Digestive System.

The Digestive System The Digestive System Mechanical Digestion

The Process of Digestion

The Digestive System Functions: Takes food into the body

Warm Up 11/3/2015 What does saliva do?

Digestion Questions What are the organs that make up the digestive system?

The Digestive System.

Presentation transcript:

Mechanical and Chemical Digestion

Tootsie Roll Experiment 1-3 Time how long it takes for the entire Tootsie Roll to disappear for each situation: Partner 1: Puts a Tootsie Roll in their mouth and does not chew. Partner 2: Chews a Tootsie Roll. Do not swallow until the Tootsie Roll has completely disappeared.

What happened? 4-7 MECHANICAL DIGESTION 4. Chewing is a form of mechanical digestion. How would you define mechanical digestion? 5-7. Name 3 structures of the mouth that aided in mechanical digestion of the Tootsie Roll?

Cracker Experiment 8-9 Place the cracker in your mouth. What’s happening? How? Like the Tootsie Roll, the cracker breaks down into smaller nutrients even without the assistance of mechanical digestion. How would you define chemical digestion? The cracker you put in your mouth was composed of starch. After chemical digestion took place, the starch was converted to a sugar called maltose. Try it again, does the cracker taste sweeter over time?

The enzyme found in your mouth is salivary amylase Reviewing Enzymes 10-15 If you’ve forgotten, review the previous slide to determine the substrate. If you’ve forgotten, review the previous slide to determine the product. The enzyme found in your mouth is salivary amylase

Swallowing is next Now fill a cup with water. 16-18 Now fill a cup with water. When you are ready to swallow the water, put your thumb and index finger gently around your Adam’s apple and try and prevent the larynx from moving upward. Swallow. Click on the picture to better understand swallowing. Make sure the sound is on.

Click on the picture to watch peristalsis in action- More on peristalsis 19-20 Waves of muscle contractions move the bolus (swallowed food) through the esophagus. This process is called peristalsis. Click on the picture to watch peristalsis in action- real footage.

The Stomach A whole lot of mixing and churning goes on in the stomach 21-24 A whole lot of mixing and churning goes on in the stomach And there’s chemical digestion too. Watch the video by clicking on the picture.

Digestion in the Small Intestine 25 Study the picture and watch the video to better understand mechanical digestion in the small intestine: https://www.youtube.com/watch?v=PfnKvErPwY4

Visit this link to learn the names of the enzymes that carry out chemical digestion in the small intestine: http://www.news-medical.net/health/What-Does-the-Small-Intestine-Do.aspx

Complete the Introductory Notes Types of digestion Enzymes involved