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Which specialized tissues are included in connective tissue?

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Collagenous fibers — connective tissue Randomly oriented collagenous fibers of varying size in a thin spread of loose areolar connective tissue (magnified about 370 ×).

Connective tissue is a diverse group of tissues responsible for maintaining the body's form, providing internal support, and ensuring cohesion among organs. In addition to various forms of fibrous tissue, connective tissue includes several specialized and recognizable variants:1

Bone: A rigid, mineralized tissue that provides structural support and serves as a reservoir for calcium.12
Cartilage: A firm, gel-like tissue that provides support and permits smooth movement at joints. It exists in three primary forms: hyaline cartilage, elastic cartilage, and fibrocartilage.13
Adipose tissue: Specialized fat tissue that stores energy, provides insulation, and forms protective pads between organs.14
Ligaments and Tendons: Dense connective tissues characterized by parallel fiber bundles that provide high tensile strength; ligaments connect bones, while tendons attach muscles to bone.1
Blood: Although fluid in nature, blood is classified as a tissue because it consists of specialized cells suspended in a liquid matrix (plasma) that perform vital transport functions throughout the body.5