Anatomy and Cell Biology 3309 Lecture 5: Lecture 5&6 - Connective Tissue.docx
3 Dec 2014
School
Department
Professor
Document Summary
Structure: consists of cells and their products (fibers and ground substances) Function: supports other tissues + mediates exchange of materials between tissues and circulation. Ct is found in all tissues of the body, providing a blood supply and nerves to other tissues. Cells of ct will be covered with each ct type. Ct can be classified as either embryonic ct, ct proper, or specialized ct. In adults, mesenchymal cells are replaced by pericytes (same thing, also precursor for any ct component) play a role in adult tissue healing. Can withstand force from one direction only (ligaments bone to bone, tendons bone to muscle, aponeuroses - flattened tendon: irregular dense ct: Fibers run in multiple directions, disorganized arrangement. Can withstand forces from all directions (skin) Products include fibers and ground substance (amorphous material) Dense = tightly packed fibrils bundles, loose = not arranged in tight bundles. Dense irregular = some going straight, others going at right angles, disorganized arrangement.
