El oponente del pulgar es un músculo tenar situado en la mano. Es el mayor de los músculos tenares y se encuentra debajo del flexor corto del pulgar y del abductor corto del pulgar. Inserciones: se origina en el tubérculo del trapecio y el retináculo flexor asociado. Se inserta en el margen lateral del primer metacarpiano. Acciones: oposición 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 Pro Feature - Dissection Atlas The recurrent branch of the median nerve arises in the hand to innervate the thenar muscles. The overlying abductor pollicis brevis muscle has been removed in this dissection. The recurrent branch of the median nerve arises in the hand to innervate the thenar muscles. The overlying abductor pollicis brevis muscle has been removed in this dissection. You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Frequent questions What is the opponens pollicis muscle? The opponens pollicis is a thenar muscle located in the hand, recognised as the largest among the thenar muscles. It plays a crucial role in the opposition of the thumb. What are the attachments of the opponens pollicis? This muscle originates from the tubercle of the trapezium bone and the associated flexor retinaculum, inserting along the lateral margin of the first metacarpal bone. What is the primary function of the opponens pollicis? The primary function of the opponens pollicis is to facilitate the opposition of the thumb, allowing for grasping and pinching movements. Which nerve innervates the opponens pollicis? The opponens pollicis is innervated by the median nerve, specifically through its recurrent branch, enabling motor control of the muscle. How is the blood supply to the opponens pollicis organised? The blood supply to the opponens pollicis comes from the superficial palmar arch, ensuring adequate perfusion for its function and health. Rate This Article