CELL SPECIALIZATION + ORGANIZATION

cell organization order

cell - tissue - organ - organ system - organism

tissue

a group of specialized cells that work together to preform a function

4 types of tissues

muscle, nervous, epithelial, connective

examples of tissues

epithelial cells make skin tissue and brain cells (neurons) make nervous tissue

3 types of muscle tissue

smooth, cardiac and skeletal

organ

a structure of tissues working together for a specific function

examples of organs

heart, lungs, leaf, stem,

organ system

group of organs working together to preform major body functions

organ system examples

digestive, respiratory, nervous, muscular

organism

complete living being made of all organ systems working together

organisms examples

human, dog, tree

major organs in skeletal system

• skull

• ribs

• arms + legs

major organs in nervous system

• brain

• spinal chord

• nerves

major organs in muscular system

• skeletal tissue

• cardiac tissue

• smooth tissue

major organs in digestive system

• mouth

• esophagus 

• stomach

major organisms in respiratory system

• lungs

• nose

• mouth