El músculo abductor corto del pulgar es un músculo tenar situado en la mano. Forma la cara anterolateral de la eminencia tenar, superponiéndose al músculo oponente del pulgar. Inserciones: se origina en los tubérculos del escafoides y del trapecio, así como en el retináculo flexor asociado. Se inserta en la cara externa de la falange proximal del pulgar. Acciones: abducción del pulgar. Inervación: nervio mediano (rama recurrente). Irrigación sanguínea: arco palmar superficial. By TeachMeSeries Ltd (2026) Fig. 1: vista palmar de los músculos tenares. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Frequent questions What is the function of the abductor pollicis brevis muscle? The abductor pollicis brevis muscle is responsible for the abduction of the thumb. This action is crucial for thumb mobility and hand function. Where does the abductor pollicis brevis muscle originate? This muscle originates from the tubercles of the scaphoid and trapezium bones, as well as the associated flexor retinaculum. These attachments provide a stable base for its function. What is the insertion point of the abductor pollicis brevis muscle? The muscle inserts on the external surface of the proximal phalanx of the thumb. This positioning allows it to effectively facilitate thumb movement. Which nerve innervates the abductor pollicis brevis muscle? The abductor pollicis brevis muscle is innervated by the median nerve, specifically its recurrent branch. This innervation is essential for the muscle's contraction and function. How is the blood supply to the abductor pollicis brevis muscle provided? The blood supply to the abductor pollicis brevis muscle comes from the superficial palmar arch. This vascularisation supports the muscle's metabolic needs during activity. Rate This Article