Lesson Digestive System Science Differentiation in action All

Lesson: Digestive System

Science Differentiation in action All living things are made up of cells. Food has to be broken down before it is transported to every cell.

Science Differentiation in action Our digestive system breaks down food and absorbs it so it can be transported around our bodies.

Science Differentiation in action Parts of our digestive system mouth oesophagus liver large intestine stomach pancreas small intestine

Science Differentiation in action Parts of our digestive system mouth where food is chewed and mixed with saliva

Science Differentiation in action Parts of our digestive system oesophagus the tube that carries food to the stomach

Science Differentiation in action Parts of our digestive system stomach stores food and mixes it with digestive juices

Science Differentiation in action Parts of our digestive system small intestine the tube where broken down food is absorbed into the blood

Science Differentiation in action Parts of our digestive system large intestine passes water back into the blood leaving solid waste

Science Differentiation in action Parts of our digestive system pancreas makes digestive enzymes

Science Differentiation in action Parts of our digestive system liver makes bile which helps to break down fats

Science Differentiation in action What is the function of each part? mouth oesophagus liver large intestine stomach pancreas small intestine

Science Differentiation in action Nutrition involves 5 stages. Ingestion Digestion Absorption Assimilation Egestion

Science Differentiation in action Teeth break down food into smaller pieces (physical digestion)

Science Differentiation in action There are four types of teeth. Upper or maxillary teeth Lower or mandibular teeth Incisors Canines Premolars Molars

Science Differentiation in action Molars Premolars Incisors Canines

Science Differentiation in action Teeth Incisors Canines Premolars Molars

Science Differentiation in action Teeth Incisors – cut food Canines – tear food Premolars – grind food Molars – grind food

Science Differentiation in action Review Questions: Label each part. E A F B C G D

Science Differentiation in action Question to think about Enzymes are involved in chemical digestion. What do you think this means? Enzymes act here!