Which description best characterizes extensor muscles compared with flexors during palpation?

Which description best characterizes extensor muscles compared with flexors during palpation?

• A. Smaller and more sinewy
• B. Larger and more bulky
• C. Softer and more rounded
• D. Hard and fibrous

Answer: (A)

When palpating, you assess muscle bulk and texture to distinguish groups. Extensor muscles, which run on the back side of limbs, are usually smaller in cross-sectional size and feel more sinewy—leaner and more fibrous—because they have longer, tendinous portions and less overall bulk. In contrast, flexor muscles on the opposite side tend to be larger and more bulky to generate the bending action against resistance, giving a rounder, beefier feel. So describing extensor muscles as smaller and more sinewy matches what you commonly feel: less mass combined with a stringier, tendon-rich texture. The other descriptions don’t fit this general pattern, since extensors aren’t typically the largest, softest, or the hardest fibrous in texture.

When palpating, you assess muscle bulk and texture to distinguish groups. Extensor muscles, which run on the back side of limbs, are usually smaller in cross-sectional size and feel more sinewy—leaner and more fibrous—because they have longer, tendinous portions and less overall bulk. In contrast, flexor muscles on the opposite side tend to be larger and more bulky to generate the bending action against resistance, giving a rounder, beefier feel. So describing extensor muscles as smaller and more sinewy matches what you commonly feel: less mass combined with a stringier, tendon-rich texture. The other descriptions don’t fit this general pattern, since extensors aren’t typically the largest, softest, or the hardest fibrous in texture.