Cornell Notes: Organization of the Body

How the body is organized: AKA Levels of Organization

  1. Cells
  2. Tissues
  3. Organs
  4. Organ systems
  5. (organism)

Tissue: cells working together with a common purpose

Four main types:

  1. connective tissue
  2. muscle tissue
  3. epithelial tissue
  4. nervous tissue.

Organs: tissue working together with a common purpose

Examples: heart, brain, lungs, “guts”, eyes, ears, skin

Organ Systems: organs working together with a common purpose

Eleven Organ Systems in the human body

1.  Nervous System- controls body functions, detects information from the environment.

2.  Respiratory System- takes in oxygen and eliminates carbon dioxide

3.  Digestive System- breaks down food and absorbs nutrients

4.  Excretory System- gets rid of waste

5.  Skeletal System- supports and protects the body

6.  Muscular System- allows movement of body and internal organs

7.  Circulatory System- transports materials to and from cells

8.  Endocrine System- controls many body processes with chemicals

9.  Lymphatic System- “immune system” that helps fight disease

10.  Integumentary System: protects the body (skin, hair, nails)

11.  Reproductive System: allows new generation to be created