Princeton's WordNet(1.50 / 2 votes)Rate this definition: 1  cocoa, chocolate, hot chocolate, drinking chocolate(noun) a beverage made from cocoa powder and milk and sugar; usually drunk hot. 2  cocoa(noun) powder of ground roasted cacao beans with most of the fat removed.
Nerve and Muscles of the Respiratory System. When a spinal cord injury occurs, the lungs and the alveoli remain the same. However, just as the injury affects the nerves that control the muscles of the arms and legs, it also affects the nerves that activate the muscles used for breathing.
Nerve C6 controls movement in the wrists and C7 controls the triceps. Cervical nerve C8 works to control the hands. These functions are assisted through the branching of nerves from the brachial plexus to the regions they control.hese nerves in the neck form the phrenic nerve, which helps control the diaphragm and regulate breathing. Injury to the phrenic nerve can result in problems breathing and even death. Ad. Together, nerves C1-C4 work to complete the functions of the cervical plexus.