Connective Tissue Quiz

Connective tissue serves as a connecting link for binding, supporting, and strengthening all other body tissues together. Its general functions include providing structural support, connecting different tissues, and facilitating metabolic activities.

Cells found in connective tissue include fixed cells (intrinsic cells) such as fibroblasts, mesenchymal cells, adipocytes, and pigment cells, as well as free cells (extrinsic cells) such as macrophages, mast cells, plasma cells, and leucocytes. Each type of cell has specific functions related to fiber production, storage, immune response, and phagocytosis.

Fibroblasts are fusiform cells with slender cytoplasmic processes and a large oval nucleus. They are responsible for fiber production, and old (inactive) fibroblasts are known as fibrocytes. Additionally, myofibroblasts are contractile cells and are more prevalent at sites of wound healing.

Adipocytes have a signet-ring like appearance and store lipids, appearing as empty spaces within the tissue. They do not undergo cell division and can occur singly in loose areolar tissue or in groups in adipose tissue. Their main function is to store energy in the form of fat.

Macrophages, or histiocytes, have an irregular shape with short branching processes and a dark indented eccentric nucleus. They are derived from monocytes and are involved in phagocytosis, making them crucial for the immune response and the removal of debris or foreign substances from the tissue.