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.
In general, primary motor cortex encodes the parameters that define individual movements or simple movement sequences. 1  Primary motor cortex neurons fire 5-100 msec before the onset of a movement. 2  Primary motor cortex encodes the force of a movement. 3  Primary motor cortex encodes the direction of movement. Many neurons in the primary motor cortex are selective for a particular direction of movement. For example, one cell may fire strongly when the hand is moved to the left, whereas it will be inhibited when the hand is moved to the right (Figure 3.8). Figure 3.8.