NEW CHAPTER

Absorption, Digestion, and Exchange

CHAPTER

the BIG ideathe BIG idea

CHAPTER OUTLINE

Systems in the body obtain and process materials and remove waste.

The respiratory system gets oxygen and removes carbon dioxide.

The digestive system breaks down food.

The urinary system removes waste materials.

2.12.1

2.22.2

2.32.3

CHAPTER RESOURCES

VOCABULARY

KEY CONCEPT CHAPTER HOME

The respiratory system gets oxygen and removes carbon dioxide.

SECTION OUTLINESECTION OUTLINE

cellular respiration

respiratory system• Your body needs oxygen

• Structures in the respiratory system function together

• Your respiratory system is involved in other functions

trachea

bronchial tube

lung

diaphragm

2.12.1

CHAPTERRESOURCESCHAPTERRESOURCES

VISUALIZATION

Observe how movements of the diaphragm and other muscles affect the lungs.

VOCABULARY

KEY CONCEPT CHAPTER HOME

nutrient

The digestive system breaks down food.

SECTIONOUTLINESECTIONOUTLINE

digestive system

peristalsis

digestion FunctionStructure

Mouth

Esophagus

Stomach

Small intestine

Large intestine

chemical and mechanical digestion

movement of food by peristalsis from mouth to stomach

chemical and mechanical digestion; absorption of broken-down nutrients

chemical digestion; absorption of broken-down nutrients

absorption of water and broken-down nutrients, elimination of wastes

mouth

esophagus

stomach

small intestine large

intestine

2.22.2

CHAPTERRESOURCESCHAPTERRESOURCES

VOCABULARY

KEY CONCEPT CHAPTER HOME

nutrient

The digestive system breaks down food.

SECTIONOUTLINESECTIONOUTLINE

digestive system

peristalsis

digestion FunctionStructure

Mouth

Esophagus

Stomach

Small intestine

Large intestine

chemical and mechanical digestion

movement of food by peristalsis from mouth to stomach

chemical and mechanical digestion; absorption of broken-down nutrients

chemical digestion; absorption of broken-down nutrients

absorption of water and broken-down nutrients, elimination of wastes

mouth

esophagus

stomach

2.22.2

small intestine

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VISUALIZATION

Observe the process of peristalsis.

CHAPTERRESOURCESCHAPTERRESOURCES

VOCABULARY

KEY CONCEPT CHAPTER HOME

The urinary system removes waste materials.

SECTIONOUTLINESECTIONOUTLINE

urinary system

urine

Waste Removal

Respiratory System removes carbon dioxide

Urinary System removes wastes from body

Digestive system removes wastes from food

Skin removes water

Kidneys Urine

Kidneys

2.32.3

CHAPTERRESOURCESCHAPTERRESOURCES

VOCABULARY

KEY CONCEPT CHAPTER HOME

I. The respiratory system gets oxygen and removes carbon dioxide.

A. Your body needs oxygen.

C. The respiratory system is also involved in other activities.

KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY

The respiratory system gets oxygen and removes carbon dioxide.

1. Exchanging Oxygen and Carbon Dioxide

2. Cellular Respiration

B. Structures in the respiratory system function together.

1. Speech and Other Respiratory Movements

2. Water Removal

cellular respiration

respiratory system

2.12.1

CHAPTERRESOURCESCHAPTERRESOURCES

VOCABULARY

KEY CONCEPT CHAPTER HOME

KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY

The digestive system breaks down food.

II. The digestive system breaks down food.

A. The body needs energy and materials.

B. The digestive system moves and breaks down food.

1. Mechanical Digestion

2. Chemical Digestion

C. Materials are broken down as they move through the digestive tract.

nutrient

digestive system

peristalsis

digestion

D. Other organs aid digestion and absorption.

2.22.2

CHAPTERRESOURCESCHAPTERRESOURCES

VOCABULARY

KEY CONCEPT CHAPTER HOME

III. The urinary system removes waste materials.

A. Life processes produce waste.

1. The Nephron

2. Water Balance

B. The urinary system removes waste from the blood.

KEY CONCEPTSUMMARYKEY CONCEPTSUMMARY

The urinary system removes waste materials.

C. The kidneys act as filters.

urinary system

urine

2.32.3

CHAPTERRESOURCESCHAPTERRESOURCES

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