Physiology 3120 Lecture Notes - Lecture 9: Type Ia Sensory Fiber, Gamma Motor Neuron, Golgi Tendon Organ
9 Dec 2017
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Lecture 9: muscle systems introduction and muscle receptors. If you have a neuromuscular blocker, you will not be able to move a single muscle, including eye muscles. You can"t move or interact in anyway with anyone. Through evolution, motor control has been an important part of the cns. We have quite an extraordinary range of motor control possibilities. To make a movement requires: selection, planning, execution. This occurs across a hierarchical, distributed system that is in parallel and in series. Very simplified diagram of some motor systems in the brain. In series: left: basal ganglia >> thalamus >> supplementary motor cortex >> motor. Cortex: right: cerebellum >> thalamus >> motor cortex. In parallel these series happen at the same time so they"re also in parallel. 3) at least 3 afferent pathways: e. g. Free nerve endings pain, pressure, temperature: signal nociceptor endings that signal pain, pressure, and temperature (cold receptors and warm receptors). Golgi tendon organ (gto) tension during contraction.
