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.
Voluntary movements are controlled largely by the primary motor cortex (M1), which is located toward the back of the frontal lobe. The cells in this region of the brain have long axons which descend in a bundle of nerve fibres called the corticospinal tract and form connections with neurons in the spinal cord.