Human System Do Now

What organs make up the respiratory system? Do Now # 1 pg. 31 What organs make up the respiratory system? Is an organ a system? Why or why not? List 4 things that happen to your body when you exercise.

Do Now # 2 Pg. 31 Give an example of a subsystem of the circulatory system. How is the human body like a cell? Arrange from simple to most complex: Earth, human population, tissues, molecule, Universe, organelle, galaxy, solar system, Organ system (ex. digestive system), atoms, Organism (ex. human), Cells, Organ

Atom, molecule, organelle, cell, tissue, organ, organ system , organism(human), human population, earth, solar system, galaxy, universe.