Which combining form pertains to muscle?

• A. Muc/o
• B. Kinesi/o
• C. Medi/o
• D. Mening/o

Answer: (A)

Muscle is identified by combining forms such as my/o (also seen as myos/o) or muscul/o. These forms show up in terms like myopathy, myositis, and muscular. In the options given, muc/o means mucus or mucous membranes, not muscle; kinesi/o is about movement; medi/o refers to the middle; mening/o relates to the meninges around the brain and spinal cord. So the muscle-related combining form isn’t represented here; the key muscle forms to memorize are my/o or muscul/o.