Current Attempt in Progress Which portion of the nervous system contains all voluntary neurons? parasympathetic sympathetic autonomic somatic

The portion of the nervous system that contains all voluntary neurons is the **somatic nervous system**. Here's a brief explanation of the options: 1. **Parasympathetic**: This is part of the autonomic nervous system and is responsible for involuntary functions, such as rest and digestion. 2. **Sympathetic**: This is also part of the autonomic nervous system and is responsible for the body's 'fight or flight' response, which is involuntary. 3. **Autonomic**: This system controls involuntary bodily functions, including heart rate, digestion, and respiratory rate. 4. **Somatic**: This system controls voluntary movements by innervating skeletal muscles. It is responsible for actions that are under conscious control. Thus, the correct answer is **somatic**.