PSYC 100 Chapter Notes -Myocyte, Spinal Nerve, Cranial Nerves

• School: Queen's University
• Department: Psychology
• Course: PSYC 100
• Professor: Ingrid Johnsrude

Document Summary

Sensitive to stimuli such as touch, pain and temperature. 3 types skin senses, internal senses, vestibular senses. Free nerve ending- a dendrite of somatosensory neurons. Pacinian corpuscle - a specialized nerve ending that detects mechanical stimuli, especially vibrations. The entire surface of the human body is innervated (supplied with nerve fibres) by the dendrites of neurons that transmit somatosensory information to the brain. Cranial nerves convey information from the face and front portion of the head. Spinal nerves convey information from the rest of the body"s surface. Two point discrimination threshold the minimum distance between 2 small points that can be detected as separate stimuli when pressed against a particular region of the skin. Phantom limb sensations that appear to originate in a limb that has been amputated. A muscle fibre that functions as a stretch receptor. Arranged parallel to the muscle fibres responsible for contraction of the muscle.