4 types of Tissue Classes

Epithelial

Tissue composed of layers of closely spaced cells that cover organ surfaces, form glands, and serve for protection, secretion and absorption. Location: Epidermis, inner lining of digestive tract, liver and other glands

Nervous

Tissue containing excitable cells specialized for rapid transmission of coded information to other cells. Location: Brain, Spinal cord, nerves.

Connective

Tissue with more matrix than cell volume, often specialized to support, bind together, and protect organs Location: Tendons and ligaments, cartilage, and bone, blood.

Muscular

Tissue composed of elongated, excitable cells specialized for contraction. Location: Skeletal muscles, Heart (cardiac muscle), Walls of viscera (smooth muscle)