Final answer:
Muscle cells specialize in contraction for movement, while neurons specialize in sending nerve signals for communication within the body, processing information, and executing bodily functions.
Step-by-step explanation:
Neurons and muscle cells perform different functions in the body and, while they share the same basic cellular components, they are specialized to fulfill their unique roles. The function of muscle cells is contraction, allowing for movement and physical activity. On the other hand, the function of neurons is to send nerve signals, which includes receiving, processing, and transmitting information through both electrical and chemical signals to other nerve or muscle cells, thereby orchestrating complex bodily functions from motor reflexes to higher cognitive processes, such as making memories or decisions.