Question

which tissue type contains an extracellular matrix?
answer

• connective
• nervous
• epithelial and connective
• epithelial
• muscle
• i dont know yet

Explanation:

To determine which tissue type contains an extracellular matrix, we analyze each option:

• Connective tissue: It is characterized by having a significant extracellular matrix (ECM) that contains fibers (like collagen) and ground substance. This ECM is a key feature, providing support, structure, and a medium for cell - cell communication.
• Nervous tissue: Primarily consists of neurons and glial cells. The extracellular space here is relatively small and does not have a prominent extracellular matrix like connective tissue.
• Epithelial tissue: Cells are closely packed together with very little extracellular matrix. The main function is protection, secretion, etc., and the cells are bound by cell - cell junctions rather than having a large ECM.
• Muscle tissue: Composed mainly of muscle cells (fibers) with a small amount of extracellular material for support, but not a prominent extracellular matrix like connective tissue.
• The option "Epithelial and connective" is incorrect because epithelial tissue has little ECM.

Answer:

A. Connective