Somesthetic receptors on the skin, like the other receptors, are transducers. Depending on where they are these receptors flow into different nerves. The trigeminal nerve from the face and the dermatones for spinal nerves. In additional to the visual, auditory, and somesthetic cues which sense the external environment there are interoceptive cueswhich sense the internal environment. The two types of interoceptive cues are proprioceptive and visceral.
Proprioceptors are a special class of receptors which help define the position of the body.
Proprioceptive stimulation has two sources. The sense that helps you keep you balance is called the labyrinthine sense. The awareness of limb position is monitored by receptors located in the joints and ligaments. This sense is called kinesthetic. The collection of responses that call for different sensory signals produced by changes in position are described as postural reflexes.