HN210 Lecture Notes - Lecture 7: Ulnar Nerve, Radial Nerve, Coracobrachialis Muscle
Document Summary
Musculocutaneous (green): primarily innervates muscles where bellies are found in upper arm (brachialis, biceps brachii, etc. ) Median nerve (yellow): posterior surface of arm; primary nerve for muscles in forearm that act to flex wrist & digits of hand; goes all the way to palm. Radial nerve: posterior; function to innervate muscles for extension. Axillary nerve: wraps around surgical head of humerus, innervates deltoid; very short. Dermatone: map of where nerves of body end & provide sensory info. Myatone: map of where muscles of body are. *ring finger: dermatone splits down the middle injury to median nerve/ulnar nerve makes only. Shingles stays dormant in a nerve root & based on where affected in body, can figure out where it came from. Axillary & musculocutaneous do not go all the way to the palm. Ulnar nerve, radial nerve, median nerve do go to palm. Inferior to elbow brachial nerve splits into radial (lateral) & ulnar (medial) artery.