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Life Science Human Body Systems and Health

Life Science 1.1 : Body Organization

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Page 1: Life Science 1.1 : Body Organization

Life Science

Human Body Systems and Health

Page 2: Life Science 1.1 : Body Organization

1. Body Organization and Structure2. Circulation and Respiration3. The Digestive and Urinary Systems4. Communication and Control5. Body Defenses and Diseases6. Staying Healthy

Table of Contents

Page 3: Life Science 1.1 : Body Organization

Life Science 1.1

Body Organization and Structure

Page 4: Life Science 1.1 : Body Organization

1. Describe how tissues, organs, and organ systems are related.

2. List 11 major organ systems.3. Identify how organ systems work together to maintain

homeostasis.

Bellringer:Match the body system in the first column with the

correct function in the second column:

1. respiratory system a. regulates body functions2. muscular system b. breaks down food3. digestive system c. pumps blood4. circulatory system d. absorbs oxygen5. endocrine system e. moves bones

Objectives:

Page 5: Life Science 1.1 : Body Organization

The many kinds of cells in your body help your internal environment stay stable.

Homeostasis The maintenance of a constant internal state

in a changing environment.Cells Form Tissues

A group of similar cells working together forms a tissue.

Your body has four main kinds of tissue.

Cells, Tissues, and Organs

Page 6: Life Science 1.1 : Body Organization

Tissues Form Organs Two or more tissues working together to carry

out a specialized function form an organ.

Page 7: Life Science 1.1 : Body Organization

Organs Form Systems Organs that work together make up an organ system.

Organ systems work together to maintain homeostasis.Your body has 11 major organ systems.

Working Together

Integumentary System

Your skin, hair, and nails protect the tissue that lies beneath.

Muscular System

Works with skeletal system to help you mover.

Skeletal System

Your bones provide a frame to support and protect your body parts.

Cardiovascular System

Your heart pumps blood through all of your blood vessels.

Page 8: Life Science 1.1 : Body Organization

Respiratory System

Your lungs absorb oxygen and release carbon dioxide.

Urinary System

Removes wastes from the blood and regulates your body’s fluids.

Male Reproductiv

e SystemProduces and delivers sperm.

Female Reproductiv

e System

Produces eggs and nourishes and protects the fetus.

Nervous SystemReceives and

sends electrical messages throughout body.

Digestive SystemBreaks down

the food you eat into nutrients that your body can absorb.

Lymphatic SystemReturns leaked

fluids to blood vessels and helps get rid of bacteria and viruses.

Endocrine SystemSend out

chemical messages.