Final answer:
Stretch receptors include muscle spindles and Golgi tendon organs, while pressure receptors include Pacinian corpuscles. These proprioceptors help in sensing our body's position and movements.
Step-by-step explanation:
Proprioceptors include both pressure and stretch receptors. The stretch receptors include muscle spindles and Golgi tendon organs, which detect the amount of stretch or lengthening of muscles and the tension or force of muscle contractions, respectively. The pressure receptors include Pacinian corpuscles, which can sense deep pressure and vibration, and Ruffini endings, which sense deep continuous pressure and stretching.
These somatosensory receptors play a crucial role in proprioceptive functions, allowing us to sense the positional changes and movement of our muscles and joints. Notably, the unconscious proprioceptive signals from these receptors do not travel to the thalamus like most other sensory information but go directly from the spinal cord to the cerebellum, the area of the brain that coordinates muscle movements.