KIN 155 Lecture Notes - Lecture 2: Golgi Tendon Organ, Muscle Spindle, Axon Hillock

• School: University of Waterloo
• Department: Kinesiology
• Course: KIN 155
• Professor: Michael Barnett- Cowan

Document Summary

Proprioception sense of one"s body" position, orientation and forces. Touch sense of contact on skin (force, shape, texture etc) Somatosensory sense organs from skin, muscles, joints, internal organs (touch and proprioception) Inner ear organs to sense position of head movement and orientation. Specialized sense organs for detecting light (retina) . a. k. a. sight. Found in skin, muscles, joints, viscera, inner ear. Once proteins are stretched, they open and na flows in. Sensory cells fire to changes in muscle length. Different spindle receptors types respond to: length rate of length change (velocity) Golgi tendon organ in series with muscle fibers (firing of the spindle fibers also results in the firing of the golgi tendons. Receptors respond to force applied to the tendon. To build muscles, you only want to slightly tear the muscle fibers not the tendons. The spasms of muscle means you"re about to rip your tendon!