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.
The medulla oblongata is the part of the brain that controls  autonomic functions. Some of the functions that it controls are  digestion, breathing, heart function, and swal â¦ lowing. The medulla oblongata is most vital part of the brain bcoz it controls the respiratory system.   the medulla oblongata regulates involuntary functions, or those that â¦ are not under our control such as breathing and heart rate. 23 people found this useful.