Which of the following is true about extracellular matrix?

• A. It is exclusively cellular
• B. Essential for cell division
• C. Primarily consists of fluid
• D. Absence is beneficial for tissue

Answer: (B)

The statement about the extracellular matrix being essential for cell division is accurate because the extracellular matrix (ECM) provides structural and biochemical support to surrounding cells. It is a dynamic network of proteins and carbohydrates that plays a crucial role in regulating various cellular functions, including migration, proliferation, and differentiation.

Cell division is heavily influenced by the ECM, as it can provide the necessary signals that trigger cellular processes. The ECM facilitates the physical attachment of cells, which is important for the mechanical stability of tissues. Additionally, it offers biochemical cues that can influence cell behavior and promote the cell division process. Thus, the integrity and composition of the extracellular matrix are vital for normal physiological functions, particularly in processes like tissue repair and regeneration.

The other choices do not accurately reflect the role of the extracellular matrix. It is not exclusively cellular; it contains a mixture of proteins, glycoproteins, and polysaccharides. While the ECM can contain fluids, it is not primarily made up of fluid; rather, it is made up of a complex structure that includes fibers and ground substance. Lastly, the absence of the extracellular matrix would not be beneficial for tissue; rather, it could lead to structural instability and impaired cellular activities, which could result in various pathological conditions.