Answer:
The cells that form healthy tissues are nerve cells that send and receive impulses, and muscle cells that contract and relax properly.
Step-by-step explanation:
Cells are the structural and functional units of living beings, whose function is to differentiate, replicate and associate to form tissues.
Cells that perform their function properly will produce functional tissues, such as nerve cells that receive and transmit nerve impulses or muscular cells that are able to contract and relax.
- Nerve cells, or neurons, are responsible for transmitting nerve impulses, forming the functional unit of the nervous tissue.
- The muscle cells are specialized structures to contract, allowing the movement of muscle contracture.
If any of these cell types cannot perform their full function, the tissue —and the organ they form— will be defective and will not function properly.
For the other options:
Nerve cells that only receive impulses or muscle cells that contract but do not relax do not provide healthy or functional tissue.