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.
These structures act indirectly on motor output, via outputs through the thalamus to widespread areas of the cerebral cortex. Key Concepts: All voluntary movement involves motor neurons in the spinal cord and brainstem that cause contraction of skeletal muscles. Neurons in many areas of the brain and spinal cord are active at overlapping times to control voluntary movements. The spinal cord can produce coordinated movements of the limbs, such as locomotion, as well as simple reflexes.