how the skin cells, neurons, muscle cells, and blood cells you have observed relate to the functions of skin, nerve, muscle, and blood tissue?

All the type of cels perform different kind of functions that are specific to them.

Explanation:

Every cell has its own work to do but different cells may have different functions in multicellular organisms, cell with the same type of job often work together.

These groups of specialized cells from tissue in turn, the tissue often group together to form larger units called organs the heart is an organ; so is the stomach.