Macromolecules play vital roles within your body. Macromolecules are large molecules within your body that serve essential physiological functions. Encompassing carbohydrates, proteins, lipids and nucleic acids, macromolecules exhibit a number of similarities.
Cerebellum. The cerebellum (infratentorial or back of brain) is located at the back of the head. Its function is to coordinate voluntary muscle movements and to maintain posture, balance, and equilibrium.
The Primary Motor Cortex. Every voluntary movement you make is controlled through the primary motor cortex, or PMC, which is located in the back of the frontal lobe, just about at the top of your head. Signals in your brain are sent to the muscles, telling them to make a movement.