31. At least three-quarters of the nerve fibers were severed, and what remained did not work. 32. Each ganglion cell or optic nerve fiber bears a receptive field, increasing with intensifying light. 33. Afferent nerve fibers responsible for sensory stimulus detection and feedback are especially sensitive to stimulation. 34. In this case, the target tissue is myelin, a fatty substance that coats nerve fibers . 35. Without this nourishing bridge, nerve fibers leading to the penis would immediately shrivel and die. 36. The retina nerve fiber layer ( RNFL ) is thinner than normal in MS patients 37. Incoming parasympathetic nerve fibers form synapses with the dendrites of nerve cells within the ganglion. 38. Damage to the myelin sheath and nerve fiber is often associated with increased functional insufficiency. 39. Yet the vagus nerve only sends a couple of thousand nerve fibers to the gut. 40. Through the canal run nerve fibers from the brain to the muscles of the tongue.
