Questions: Which of these muscles is named for the arrangement of its fascicles? adductor longus external oblique deltoid temporalis

The answer is the second one (B): external oblique.

Explanation for each option:

• Adductor longus: This muscle is named for its function (adducting the thigh) and its length (longus means long).
• External oblique: This muscle is named for the arrangement of its fascicles, which run obliquely (at an angle) to the midline of the body.
• Deltoid: This muscle is named for its shape, which resembles the Greek letter delta (Δ).
• Temporalis: This muscle is named for its location near the temporal bone of the skull.

Summary: The external oblique muscle is named for the arrangement of its fascicles, which run obliquely to the midline of the body.