Fill in the Blanks Free nerve endings A&POnline version Unit 2 by Kirsten Storemski 1 body pain movement mechanism endings structural temperature nerve simplest common There are many types of sensory receptors . Free are the and most . They are the terminal ends of dendrites . They are found in most of the . These are responsible for the sensation of , , itch , , and crude touch . The of action potential formation is not know .