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.
! pons Myelencephalon; Medulla oblongata (medulla) Function: Controls autonomic functions â¢ Relays nerve signals between the brain and spinal cord Location: The medulla oblongata is the lower portion of the brainstem. It is inferior to the pons and anterior to the cerebellum.