32.2 digestive system 1 st -turn-in yesterday’s handout! 2 nd -on a sheet of clean notebook paper...

32.2 Digestive System

1st-Turn-in yesterday’s handout!

2nd-On a sheet of clean notebook paper

a. Complete the data analysis on page 985 . Read the information and answer questions 1 and 2.

b. P. 995-996 Answer # 1, 2, 4, 5, 6, 7, 10, 12-18.

3rd-notes on problems of the Digestive System

It is Eagle Time- Bell Rings at 9:50

32.2 Digestive System

• In your notes- Define the terms on page 977 and page 982

• Add- the three functions of the pancreas (p. 980)

• On page 978-List the seven enzymes, their location, and their function.

32.2 Digestive System

Enzymes-Proteins that lower the activation energy needed to digest nutrients.

On page 978-List the seven enzymes, their location, and their funtion.

Put this in your notes.

32.2 Digestive System

• Digestion of carbohydrates begins in the mouth.

• Digestion of proteins occurs in the stomach. • Digestion of fats and sugars occur in the

small intestine.

32.2 Digestive System

Build you model of the digestive system

Label each organ-stomach, pancreas, esophagus, liver, small intestine, large intestine

Work quietly at your seat.Please do not waste the tape-use very small pieces

32.2 Digestive System

KEY CONCEPTThe digestive system breaks down food into simpler molecules.

32.2 Digestive System

32.2 Digestive System

32.2 Digestive System

mouth

esophagus

liver

gallbladder

large intestine

small intestine

rectum/anus

Several digestive organs work together to break down food.

• The digestive system breaks down food into energy cells can use.

• After digestion is complete, nutrients are absorbed and transported to all cells.

• Undigested materials are eliminated as liquid and solid wastes.

32.2 Digestive System

Digestion begins in the mouth and continues in the stomach.

• Mechanical and chemical digestion break down food. • Peristalsis moves food through the organs.

esophagus

muscles contract

muscles relax

food

stomach

32.2 Digestive System

Digestion is completed in part of the small intestine.

• Most digestion takes place in the duodenum. • The pancreas, liver, and gallbladder aid in digestion.

– pancreas helps digest fat and protein – bile from the liver/gallbladder helps digest fats

liver

bile

bile

gallbladder

duodenum

pancreas

enzymes

chyme

stomach