kudoksista

Tissues, called kudokset in Finnish, are groups of cells with a common origin that perform specific functions within an organism. In animals, tissues are commonly classified into four main types: epithelial, connective, muscle, and nervous. Epithelial tissue forms coverings and linings; connective tissue provides support and stores energy; muscle tissue enables movement; and nervous tissue processes information and coordinates activity. Plants also have tissue systems, including dermal, ground, and vascular tissues, though terminology and organization differ.

Tissues are composed of cells embedded in an extracellular matrix that varies by tissue type. The matrix contains proteins such as collagen and elastin, proteoglycans and glycoproteins, and, in many connective tissues, fluid components. Cells within tissues communicate through junctions and signaling molecules to maintain function and respond to damage.

At higher organization levels, tissues assemble into organs and organ systems that carry out complex tasks, from digestion to locomotion and cognition. Tissue health is essential for development, aging, and disease. Histology and pathology study tissues by examining prepared sections under microscopes, often using stains such as hematoxylin and eosin and specialized techniques like immunohistochemistry.

In Finnish usage, kudoksista is the elative plural form of kudokset (tissues), meaning "from the tissues." This form is common in scientific writing when indicating origin or source.