Digestive System. Do Now On your own, write down in as much detail as possible, where the digestion process starts, where it is completed and everything.

Digestive System

Do Now On your own, write down in as much

detail as possible, where the digestion process starts, where it is completed and everything in between

Collaborate with a partner to create a final list of the digestion process

Homework Due Today Chapter 30.3 Split Page Notes

Homework Due Tomorrow Read 30.4 Define:

Excretion Ureter Urinary bladder Urethra Nephron Filtration Glomerulus Bowman’s Capsul Reabsorption Loop of Henle

Review• Food contains energy, used by the cells by

what is called ATP• The energy available in food can be

measured by burning it!• The heat that is created can be measured in

“Calories”• Calorie- the amount of heat needed to raise

the temperature of gram of water by 1 degree C

• 1 Calorie = 1000 calories

Review• Water• Carbohydrates

• Complex carbs contain fiber which can reduce the risk of heart disease

• Fats• Proteins• Vitamins• Minerals

Diagram Digestive System Handout – Digestive vocab

Functions of Digestive System Converts food into small molecules Food is processed by:

Ingestion Digestion Absorption Elimination

Ingestion First step The process of putting food into your

mouth The role of teeth

Are teeth important in digestion? How do human’s teeth reflect an

omnivorous diet?

Digestion Mechanical Digestion – physical

breakdown of large pieces of food into smaller pieces

Chemical digestion – breakdown of small particles into molecules the body can use

Vitamins and minerals

Absorption Where does absorption occur? Majority of absorption occurs in the

small intestine Once broken down, molecules travel

throughout the body system

Elimination Body does not absorb all the substances

that are ingested Remaining products are eliminated

through waste

Dr. Beaumont “Father of Gastric Physiology” Experimented with the stomach and

how food was broken down and processed

Homework Due Tomorrow Read 30.4 Define:

Excretion Ureter Urinary bladder Urethra Nephron Filtration Glomerulus Bowman’s Capsul Reabsorption Loop of Henle

In order to leave… On a blank piece of paper, write down

what the liver produces to help break down and digest chyme

B I L E