Describe the main types of connective tissue and their general roles in the animal body.

Connective tissues are the most abundant and widely distributed tissues in the body, characterized by their extracellular matrix. They include: 
1. Loose connective tissue (e.g., areolar, adipose): Binds organs, holds fluids, stores fat. 
2. Dense connective tissue (e.g., tendons, ligaments): Provides strong connections and structural support. 
3. Supportive connective tissue (e.g., cartilage, bone): Provides structural framework, protection, and allows movement. 
4. Fluid connective tissue (e.g., blood, lymph): Transports substances, involved in immunity and fluid balance. Generally, connective tissues support, connect, protect, insulate, and transport.