Wood anatomy is the study of the internal structure of wood, which is primarily composed of cellulose, hemicellulose, and lignin. These components give wood its strength and durability. The main types of cells found in wood include tracheids, vessels, and fibers, each serving specific functions in water transport and structural support. The arrangement and size of these cells vary between different species of trees, contributing to the unique characteristics of each type of wood. For example, hardwoods typically have a more complex structure than softwoods, affecting their appearance, density, and uses in construction and furniture making.