LO: SWBAT explain how the body is organized

DN: What are cells? Explain the difference between a unicellular and a multicellular organism.

HW: h/o cells r us

Tuesday October 2, 2012

How is the body organized?

The body is highly organized. It allows the

body to function as a fine-tuned machine! It always

starts from a smaller structure, combining to

create a larger structure.

1. Organelle

Substructure of a cell

It performs a specific function

Found inside the cell

2. Cell

Microscopic

Made up of organelles

All living things are made up of cells

3. TissueA group of cells working together form a tissue.

Ex: Muscle cells working together form muscle tissue, skin cells working together form skin tissue.

4. Organ One or more tissues working together to perform a specific function.

Ex. stomach, skin, liver

kidney lungs

5. Organ SystemTwo or more organs that work together to perform a specific process.Ex. Stomach, small intestine, large intestine all work together to form the digestive system.

Digestive system

6. Organism

When all organ systems work together and create a living thing

Ex. fungi, plants, animals

cells tissues

organs

organelles

Organ systems

organism

There are many different types of cells! They have a variety of sizes and shapes! Why is this?

Each type of cell carries out a different function

Ex. Muscle cells, nerve cells, sperm cells