NROC64H3 Chapter Notes - Chapter 13: Golgi Tendon Organ, Withdrawal Reflex, Stretch Receptor
Document Summary
Cardiac muscle: the heart muscle, and it contracts rhythmically even in the absence of any innervation. Innervation of the heart from the autonomic nervous system functions to accelerate or slow down the heart rate. Each fiber is innervated by a single axon branch from the cns. *** because skeletal muscle is derived embryologically from 33 paired somites, these muscles and the parts of the nervous system that control them are collectively called the somatic motor system. *** important: somatic motor system - voluntary and generates behavior. Remember: the elbow joint is formed where the humerus, is bound by fibrous ligaments to the radius and ulna: movement in that direction that closes the joint is called - flexion, brachialis causes flexion. Its tendons insert into the humerus at one end and into the ulna at the other: the biceps brachii and the coracobrachialis (lies under the biceps) also cause flexion at the joint.
