a) The Eye in your Thigh: a patch of skin
cells on the leg that can distinguish between bright and dark conditions, perhaps to help regulate the body clock b) The Ear in your Rear: nerves in the buttocks attuned to infrasound vibrations of between 10 and 25 hertz, perhaps to warn of approaching predators or thunderstorms c) The Nose in your Toes: scent - detecting sebaceous glands on the feet
whose purpose is unclear d) The Tongue in your Lung: taste - bud - like receptors that detect bitter substances and dilate or restrict the
airways accordingly