Innervation refers to the supply of nerves to a specific body part, allowing it to receive signals from the nervous system. This process is essential for controlling muscle movements and transmitting sensory information, such as touch, pain, and temperature. Different types of nerves, including motor nerves and sensory nerves, play distinct roles in innervation. The innervation of organs and tissues is crucial for their proper functioning. For example, the autonomic nervous system innervates internal organs, regulating involuntary functions like heart rate and digestion. Understanding innervation helps in diagnosing and treating various medical conditions related to nerve damage or dysfunction.