1. 28.1 Levels of Organization
Set up Cornell Notes on pg.27
Topic: 28.1 Levels of Organization
Essential Question(s):
Create a Flow Map sequencing the five levels of organization. Please add a colored picture for each. (p. 856 in book)
28.1 Levels of Organization
2.1 Atoms, Ions, and Molecules
KEY CONCEPT The human body has five levels of organization.
ESSAYS DUE TODAY

2. KEY CONCEPT The human body has five levels of organization.

3. Main Idea
Specialized cells function together in tissues, organs, organ systems, and the whole organism.
Scientists have organized multicellular structures into five levels based on complexity

4. 1) Cells: Organisms are made up of specialized cells that each have a particular structure that enables it to perform a specific task
Exs:
Red blood cell- delivers oxygen to all tissues
Nerve cell- provides a pathway for electrochemical
nerve impulses

5. 2. Tissues: are groups of similar cells working together to perform a specialized function

6. 3. Organs: are different types of tissues working together to perform a function
Exs:
Lungs
Heart
Stomach

7. 4. Organ systems: two or more organs working together to perform a function
Perform the most complex activities in the body
Ex: Respiratory system- lungs, sinuses, nasal passage, pharynx, larynx

8. There are 11 major organ systems in the human body (p. 856)

9. Organism: The organ systems make up the entire organism.
For the organism to stay alive, all of the systems must interact and work together.

10. Cells Working Together (3m27s)

11. Levels of Organization Flow Map Example
Organ System
Cells
Tissue
Organ
Organism
Lungs
Site where gases are exchanged
Human
Epithelial lung cell
Epithelial lung Tissue
Respiratory System
Brings O² for cells
Expels CO² and water vapor
Nose, sinuses, pharynx, larynx, trachea, lungs
Use pg to help you.

12. Levels of Organization Flow map
Start by picking your organism then your organ system, organ, etc…
You MAY NOT use the respiratory system

13. Levels of Organization Flow Map (p. 26 in INB)
Cells
Tissues
Organ
Organ System
Organism
Type of Cell
Type of Tissue
Name of specific organ
Function of your organ
Organism of choice (animal)
Name of organ system
Function of your organ system
Include list of organs/tissues involved
Picture
Picture
Picture
Picture
Picture
Use pg to help you. MUST HAVE COLOR