This document contains diagrams and descriptions of various tissues and structures in the human body, including: 1. A diagram labeling structures in cartilage such as collagen fibers, lacunae containing chondrocytes, and the extracellular matrix. 2. Diagrams of different gland types including a simple branched acinar gland and serous acini within a parotid salivary gland. 3. Labels and descriptions of nervous system structures such as the granular cell layer of the cerebellum, neuroglia surrounding axons, and the anterior and posterior horns within the spinal cord.