The sensory nerve endings are specialized neurones that are stimulated to fire action potntiels based on chemical factors, photons, heat etc depending on their location and type.
Controlls all body functuon, and protect body
The sensory nerves are nerves that let you feel things and it sends signals to your brain when you feel something touching you.
Olfactory I, Optic II, and Vestibulocochlear VIII
Are light touch receptors that detect bending of hairs. Eg: The tickle of a mosquito landing on your skin is mediated by hair follicle receptors.