Types of Tissues and Epithelial Tissue Classification

Types of Tissue

• Four main types of tissue in the body: epithelial, connective, muscle, and nervous tissue.

Epithelial Tissue

• Covers body surfaces and lines cavities, serving protective and absorptive functions.
• Forms the outer layer of skin, the lining of organs, and the inner surfaces of body cavities.

Connective Tissue Function

• Provides support, binds other tissues together, and serves as a medium for transportation of substances.
• Includes various types, such as bone, adipose (fat), blood, and cartilage, each with unique roles.

Epithelial Tissue Classification

• Classified based on cell shape: squamous (flat), cuboidal (cube-shaped), and columnar (tall, column-like).
• Also categorized by the number of layers: simple (single layer) or stratified (multiple layers).

Composition of Cartilage

• Composed of chondrocytes (cartilage cells) and an extracellular matrix that includes collagen and elastin fibers.
• Provides flexible support and cushioning for joints, as well as structures like the nose and ears.