Final answer:
The main functions of the sensory-somatic nervous system are sensation and voluntary muscle control.
Step-by-step explanation:
The main functions of the sensory-somatic nervous system are sensation and voluntary muscle control. The somatic nervous system controls skeletal muscles and is responsible for our conscious perception of the external environment. It allows us to sense and respond to stimuli through voluntary movements. For example, when you decide to walk across the room or play basketball, you are utilizing your sensory-somatic nervous system.