1. What have we learned about? 2. Let us compare these objects. Plant Cell 1 m Virus 3 m Bacteria 100 10 m Animal Cell

Animal Body Systems Systems Organs Tissues Cells Cells: Structure and Function What do they look like? What do they do?

Cells: Structure and Function Carrying oxygen Thinking Digesting food Contracting to move body parts Giving shape to the body blood cells brain cells stomach cells muscle cells bone cells

Tissues: Structure and Function Covers and Lines Epithelial Tissue Binds and Supports Connective Tissue Functions in movement Muscle Tissue Forms a communication network Nervous Tissue http://www.frog-life-cycle.com/diagram-frog-anatomy.html

Organs (Many Tissues) Structure and Function Heart Muscle Tissue pumps blood Epithelial Tissue lines the heart chambers. Connective tissue make the heart elastic. Neural Tissue regulates contraction http://www.virted.org/Animals/AnimalFunctions.html

Organs: Composed of Many Tissues Structure and Function Stomach Muscle Tissue digests food Epithelial Tissue secretes enzymes Nervous Tissue communicates person of hunger

Systems: Structure and Function System that … Gives shape, protects its organs and allows movement. Muscular/skeletal Makes more of itself or has babies Reproductive System Gets rid of wastes after it uses energy to do its work. In humans kidneys and skin do this job Excretory System Breaks down the food taken into body: In humans, it includes the mouth, stomach and intestines Digestive system