Which component of the Glasgow Coma Scale evaluates motor response?

• A. Eye opening.
• B. Verbal response.
• C. Motor response.
• D. Posture.

Answer: (C)

Motor response is the Glasgow Coma Scale component that evaluates how the patient moves in response to a command or a painful stimulus. It reflects the integrity of motor pathways and brainstem function by looking at actions such as obeying commands, localizing or withdrawing from pain, or showing abnormal flexion or extension postures. The motor portion is scored to capture the level of motor responsiveness, with better motor function yielding a higher score. The other parts assess different domains: eye opening measures wakefulness and arousal, while verbal response gauges language and orientation. Posture by itself isn’t a separate part of the Glasgow Coma Scale, though certain postures can indicate severe injury, they don’t form the motor score itself.