The musculocutaneous nreve does not fit this generalisation. As a generalisation, each joint is supplied by the nerves that innervate the muscles acting about the joint. All students should trace the route of each major nerve through the limb during practical classes. You do not have to remember the entire route but note their major relationships to previously named structures. Return to Lecture Outline .
Nerves have different endings.
At the end of a motor nerve fibre is a motor end plate which forms part of the neuromuscular junction. A motor unit consists of a single nerve fibre and all the muscle fibres it innervates. There may be few muscle fibres per nerve fibre, as in the intrinsic muscles of the hand, or many, as in gluteus maximus or the gastrocnemius muscles. Remember the motor homunculus of the frontal lobe of the cerebrum. You should know about receptors and their functions .