28.1 Levels of Organization Set up Cornell Notes on pg. 41 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) This EQ can go on the bottom half of pg 40. If you do not have room, tape a page in. 28.1 Levels of Organization 2.1 Atoms, Ions, and Molecules KEY CONCEPT The human body has five levels of organization.

KEY CONCEPT The human body has five levels of organization.

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

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

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

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

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

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

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

Levels of Organization Flow Map (p. 40 in INB) Cells Tissues Organs Organ Systems Organism Example Cell Example Tissue Example organ Name of organ system Human Picture Picture Picture Picture Picture Use pg. 855-856 to help you.

Levels of Organization Flow Map Example Cells Tissues Organs Organ Systems Organism Ovarian Epithelial Tissue Ovaries Fallopian tubes Uterus Vagina Ovary cell Female Human Reproductive System Use pg. 855-856 to help you.