Nerve endings are specialized structures at the tips of nerve fibers that transmit signals between the nervous system and the body. They play a crucial role in sensing stimuli such as touch, temperature, and pain. These endings can be found throughout the body, including in the skin, muscles, and organs, allowing us to perceive our environment. There are different types of nerve endings, including free nerve endings, which detect pain and temperature, and Meissner's corpuscles, which are sensitive to light touch. These structures help the body respond to changes in the environment, ensuring proper functioning and safety.