Classwork Why cant you use your teeth to

Classwork • Why can’t you use your teeth to breathe? • Why can’t you use your arm muscles to digest food? Vocabulary: Find the next blank page in your Vocabulary composition notebook. Title the page, “Body Systems” Define the following terms on that page: You may use Chapter cell 2, section 3 (pg. 64), function or the glossary to tissue Epithelial tissue define the words. organ Nervous tissue Organ system Muscle tissue Organism Structure Connective tissue

The Benefits of Being Multicellular • You are a ______ multicellular _____. organism That means you are made of many cells. • Benefits of being multicellular: – Larger size – Longer life – Specialization (more efficient)

Review… • What are cells? • Cells are the smallest unit that can perform all of the processes of life.

Cells Working Together • A ____ tissue is a group of cells that work together to perform a specific job. • Animals have four basic types of tissues: – Nerve tissues – Muscle tissues – Connective tissues – Protective tissues • Plants have three types of tissues: – Transport tissues – Protective tissues – Ground tissues

Tissues Working Together • A structure that is made up of _____ two or more _____ tissues working together to perform a specific function is called an organ _____. • Animal organs: – Heart, stomach, brain, lungs, intestines • Plant organs: – Roots, stems, leaves

Organs Working Together • A group of ____ organs working together to perform a particular function is called an _____ organ _____. system • Examples: digestive system, respiratory system, circulatory system • Plants also have organ systems • Examples: leaf system, root system, stem systems

Organisms/Structure & Function • Anything that can perform life processes by itself is an _____. organism • _____ Structure is the arrangement of parts in an organism. It includes the shape of a part and the material of which the part is made. • _____ Function is the job a part does.

Levels of Organization Cells Tissues Organ Systems Organism