a group of similar (if not identical) cells with a common function- contain the extracellular fluid called the matrix: surrounds all its cells
what is a tissue?
The term that best defines this group of similar (if not identical) cells with a common function and with an extracellular fluid called the matrix that surrounds all its cells is “tissue.” In biology, tissues are defined as a group of cells that perform a common function. These similar cells are held together by specialized junctions or intercellular connections, and they are surrounded by an extracellular matrix that helps them to maintain their shape and structure.
There are four types of tissue in animals: epithelial tissue, connective tissue, muscle tissue, and nervous tissue. Each type of tissue has a unique function in the body. For example, epithelial tissue covers the body surface and lines the internal organs, connective tissue connects and supports different body structures, muscle tissue is responsible for movement, and nervous tissue controls and coordinates body functions.
The extracellular matrix (ECM) is a mixture of non-living substances, such as collagen, elastin, and glycoproteins. The ECM provides support and structure for the cells, and it also serves as a medium for the exchange of nutrients, waste products, and signaling molecules. The composition of the ECM varies depending on the tissue type.
In conclusion, a group of similar (if not identical) cells with a common function and with an extracellular fluid called the matrix that surrounds all its cells is called tissue. Tissues are important structures in animals, as they perform specific functions that contribute to the overall health and well-being of the organism.
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