radicle - (anatomy) a small structure resembling a rootlet (such as a fibril of a nerve)

nerve fiber, nerve fibre - a threadlike extension of a nerve cell

synapse - the junction between two neurons (axon-to-dendrite) or between a neuron and a muscle; "nerve impulses cross a synapse through the action of neurotransmitters"

motor nerve - a nerve that passes toward or to muscles or glands

sensory nerve - a nerve that leads from receptors toward or to the central nervous system

fasciculus, fiber bundle, fibre bundle, fascicle - a bundle of fibers (especially nerve fibers)

cranial nerve - any of the 12 paired nerves that originate in the brain stem

depressor nerve, depressor - any nerve whose activity tends to reduce the activity or tone of the body part it serves

musculospiral nerve, nervus radialis, radial nerve - largest branch of the brachial plexus; extends down the humerus to the lateral epicondyle where it divides into one branch that goes to the skin on the back of the hand and another that goes to the underlying extensor muscles

splanchnic nerve - any of several nerves of the sympathetic part of the autonomic nervous system that innervate viscera and blood vessels

nervus ischiadicus, sciatic nerve - arises from the sacral plexus and passes about halfway down the thigh where it divides into the common peroneal and tibial nerves

nervus saphenus, saphenous nerve - a branch of the femoral nerve that supplies cutaneous branches to the inner aspect of the leg and foot

cubital nerve, nervus ulnaris, ulnar nerve - a nerve running along the inner side of the arm and passing near the elbow; supplies intrinsic muscles of the hand and the skin of the medial side of the hand

nervus spinalis, spinal nerve - any of the 31 pairs of nerves emerging from each side of the spinal cord (each attached to the cord by two roots: ventral and dorsal)

bravery, courage, courageousness - a quality of spirit that enables you to face danger of pain without showing fear

aggressiveness - the quality of being bold and enterprising

audaciousness, audacity - aggressive boldness or unmitigated effrontery; "he had the audacity to question my decision"

brace, poise - prepare (oneself) for something unpleasant or difficult