Final answer:
The somatic nervous system functions include controlling skeletal muscles and sensing the external environment, as it is responsible for voluntary actions and reflexes, unlike the autonomic nervous system, which manages involuntary functions.
Step-by-step explanation:
The functions of the somatic nervous system include controlling skeletal muscles and sensing the external environment. The somatic nervous system is responsible for voluntary activities, like walking or playing an instrument, which occur through conscious decisions or reflexive actions that involve skeletal muscles. In contrast, the autonomic nervous system (ANS) controls involuntary activities related to cardiac muscle, smooth muscle, and glandular secretions, handling functions such as heart rate regulation, digestion, and maintaining homeostasis.
Therefore, the correct functions of the somatic nervous system that apply are:
- Controlling skeletal muscles
- Sensing the external environment
These highlight the somatic nervous system's involvement in our voluntary movements and interactions with the world around us.