Kinesthesis is the sense of the position and movement of body
parts. Through kinesthesis, people know where all the parts of their bodies are and
how they are moving. Receptors for kinesthesis are located in the muscles, joints,
and tendons.
The sense of balance or equilibrium provides information about where the body
exists in space. The sense of balance tells people whether they are standing up,
falling in an elevator, or riding a roller coaster. The sensory system involved in
balance is called the vestibular system. The main structures in the
vestibular system are three fluid-filled tubes called semicircular
canals, which are located in the inner ear. As the head moves, the fluid in
the semicircular canals moves too, stimulating receptors called hair cells, which
then send impulses to the brain.