What is tissue?

What is tissue?

• A. A group of tissues
• B. A group of similar cells that perform a specific function
• C. A system of organs
• D. A single cell type

Answer: (B)

Understanding tissue means recognizing that cells specialize and join together to carry out a common job. A tissue is a group of similar cells that perform a specific function, often with some shared extracellular material that helps them work together. For example, muscle tissue contains cells that contract to move parts of the body, while epithelial tissue lines surfaces and protects them. Tissues then combine to form organs, so a group of tissues would be an organ, not a tissue by itself. An organ system is a higher level, made up of multiple organs functioning together. A single cell type on its own is just a cell, not a tissue. So the description that best fits tissue is a group of similar cells that perform a specific function.

Understanding tissue means recognizing that cells specialize and join together to carry out a common job. A tissue is a group of similar cells that perform a specific function, often with some shared extracellular material that helps them work together. For example, muscle tissue contains cells that contract to move parts of the body, while epithelial tissue lines surfaces and protects them. Tissues then combine to form organs, so a group of tissues would be an organ, not a tissue by itself. An organ system is a higher level, made up of multiple organs functioning together. A single cell type on its own is just a cell, not a tissue. So the description that best fits tissue is a group of similar cells that perform a specific function.