NROC64H3 Chapter Notes - Chapter 13: Intrafusal Muscle Fiber, Institute For Operations Research And The Management Sciences, Extrafusal Muscle Fiber
Document Summary
Motor system= all our muscles and the neurons that control them. Motor control= 2 parts= 1) spinal cords command and control of coordinated muscle contraction and 2) the brains command and control of the motor programs in the spinal cord. Smooth muscle= lines the digestive tract, arteries + related things and is innervated by nerve fiber from the ans role in peristalsis= movement of material in small intestine + control of bp/flow. Muscles have 100"s of muscle fibers= cells of skeletal muscle and they are innervated by one axon branch from cns muscles + nervous system that conrols them= somatic motor system= under voluntary control + generates behavior. Elbow joint= ormed when the humerus= upper arm bone is bound by fibrous ligaments to the radius and the ulna= bones of the lower arm. Joint= forms like a hinge and movement in the direction that closes the knife= flexion and one that opens knife= extension.
