| Epithelial Tissue | Connective Tissue | Nervous Tissue | Muscle Tissue | |
|---|---|---|---|---|
| Functions | Protection, absorption, and excretion of materials | Binding of epithelial tissue to structures, support, and transport of substances | Receiving and transmitting nerve impulses | Voluntary and involuntary movements |
| Locations | Skin, lining of digestive system, certain glands | Under skin, surrounding organs, blood, bones | Brain, spinal cord, and nerves | Skeletal muscles, muscles surrounding digestive tract and blood vessels, the heart |