The arm is composed of three bones: the humerus, radius, and ulna. The humerus, the longest bone in the arm, extends from the shoulder to the elbow, where it articulates with the radius and ulna. The radius and ulna, located in the forearm, work together to facilitate rotation and movement of the wrist and hand.
| Location | Tendon(s) Visible | Typical Appearance | |----------|------------------|--------------------| | | Extensor digitorum, extensor indicis, extensor pollicis longus | Thin, rope‑like cords that fan out from the dorsal carpal area toward the fingertips. | | Palmar side | Flexor digitorum superficialis/profundus, thenar tendons | Slightly thicker cords that run parallel to the fingers; become prominent when the hand is clenched. | | Wrist | Radial and ulnar styloid tendons | Small “pegs” at the wrist edges; useful for indicating wrist flexion/extension. | | Forearm | Biceps tendon (anterior), triceps tendon (posterior) | Biceps tendon forms a small, rounded knob at the elbow; triceps tendon creates a flatter, triangular surface on the posterior elbow. | The arm is composed of three bones: the
The most common mistake in sculpting arms is treating the forearm like a static cylinder. Pronation vs. Supination: | Location | Tendon(s) Visible | Typical Appearance
Anatomy for Sculptors frequently offers free PDF previews and educational newsletters on their official website. | | Forearm | Biceps tendon (anterior), triceps