Each type of tissue has a unique structural organization that suits its function:
Epithelial Tissue: Characterized by tightly packed cells with minimal extracellular matrix, forming continuous sheets. This organization is crucial for its roles in protection, secretion, and absorption. Connective Tissue: Has a more dispersed cell arrangement within a significant amount of extracellular matrix, providing structural and metabolic support. Muscle Tissue: Contains densely packed cells that can contract, facilitating movement. The arrangement of actin and myosin filaments within muscle cells is key to their function. Nervous Tissue: Comprises neurons and glial cells. Neurons have long extensions (axons and dendrites) that facilitate signal transmission, while glial cells support and protect neurons.
