A muscle located on the ventral side of the arm is most likely a(an) _____?

• A. Tendon
• B. Extensor
• C. Flexor
• D. Intrinsic muscle

Answer: (C)

When you look at the front (ventral/anterior) of the arm, the muscles there mainly act to bend the elbow—these are flexors. A muscle labeled as a flexor shortens to bring the forearm toward the upper arm, producing flexion at the elbow. In contrast, extensors sit on the back (dorsal/posterior) side and straighten the joint. A tendon is only connective tissue tying a muscle to bone, not a type of muscle. An intrinsic muscle stays within the region it moves (like some hand muscles) and isn’t defined by being on the front of the arm. So a muscle located on the ventral side of the arm is most appropriately described as a flexor.