Question

a neuron in the aorta detects oxygen content in the blood and relays this information to the brain. this neuron is an ____ fiber in the ____ nervous system. multiple choice efferent, somatic efferent, autonomic afferent, autonomic afferent, somatic

Explanation:

• Afferent vs efferent: Afferent neurons carry information to the central nervous system (like the brain), while efferent neurons carry information away from the central nervous system. Since the neuron is relaying information to the brain, it is afferent.
• Somatic vs autonomic: The somatic nervous system is involved in voluntary control (e.g., moving skeletal muscles). The autonomic nervous system controls involuntary functions (e.g., heart rate, blood - oxygen level monitoring). Detecting oxygen content in the blood (an involuntary function) is part of the autonomic nervous system.

Answer:

C. afferent, autonomic