Which combining form pertains to muscles and muscle movements?

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

Answer: (A)

Movement is the key idea here. The combining form kines/o means movement or motion, which directly relates to how muscles function to create movement in the body. This makes kines/o the best fit for a term about muscles and their movements, as seen in kinesiology, the study of body motion. The other options don’t fit: muc/o is mucus, mening/o refers to the meninges surrounding the brain and spinal cord, and stomat/o relates to the mouth, none of which describe muscle movement.