Certification Board for Sterile Processing and Distribution (CBSPD) Sterile Processing Technician Practice Exam

What is a primary function of the voluntary nervous system?

1. Heart rate regulation

2. Skeletal muscle contractions

3. Involuntary bodily functions

4. Reflex actions

The correct answer is: Skeletal muscle contractions

The primary function of the voluntary nervous system is to control skeletal muscle contractions. This division of the nervous system, also known as the somatic nervous system, is responsible for transmitting signals from the brain and spinal cord to specific muscles throughout the body, allowing for intentional and controlled movements. For example, when you decide to lift your arm, the voluntary nervous system sends signals to the skeletal muscles in your arm to contract and perform the action. In contrast, the other options pertain to functions that are generally managed by the autonomic nervous system or are reflexive in nature. Heart rate regulation primarily falls under the autonomic nervous system, which controls involuntary activities of the heart and other organs. Involuntary bodily functions, such as digestion or respiratory rate, are also managed by the autonomic system, ensuring these functions operate without conscious thought. Reflex actions can occur rapidly in response to stimuli without the need for conscious control, involving both voluntary and involuntary pathways but not led by the voluntary nervous system directly.