Connective tissue matrix is composed of _ fibers and ground substance cells and fibers all organic compounds ground substance and cells
The Correct Answer and Explanation is:
Correct Answer: fibers and ground substance
Explanation:
Connective tissue is a fundamental type of tissue in the human body that plays a vital role in support, protection, insulation, and transport of substances. Its structural integrity and function are largely determined by its extracellular matrix (ECM), which is the non-living component present outside of the cells. The ECM provides structural and biochemical support to the surrounding cells.
The matrix of connective tissue is specifically composed of fibers and ground substance. These two components make up the extracellular material that gives connective tissue its unique characteristics, such as strength, elasticity, and resistance to compression.
Fibers within the matrix include:
- Collagen fibers: Strong and resistant to stretching, providing tensile strength.
- Elastic fibers: Capable of stretching and recoiling, contributing to tissue flexibility.
- Reticular fibers: Form a supportive mesh in soft tissues like the liver and spleen.
Ground substance is the amorphous, gel-like material that fills the spaces between cells and fibers. It consists of water, glycosaminoglycans (such as hyaluronic acid), proteoglycans, and glycoproteins. This substance allows nutrients and waste products to diffuse between the blood and cells, and also provides a medium through which cells and fibers are suspended.
Although connective tissue contains cells such as fibroblasts, macrophages, mast cells, and adipocytes, cells are not part of the matrix itself. Instead, they are embedded in the matrix and are responsible for producing and maintaining its components.
Thus, the matrix is best described as being composed of fibers and ground substance, not cells or other general organic compounds. This composition gives connective tissue its mechanical and physiological properties across various types such as bone, cartilage, blood, and adipose tissue.
