El músculo flexor largo del pulgar es un músculo situado en el compartimento profundo de la parte anterior del antebrazo. Inserciones: se origina en la superficie anterior del radio y en la membrana interósea circundante. El tendón atraviesa el túnel carpiano y se inserta en la base de la falange distal del pulgar. Acciones: flexiona la articulación interfalángica y la articulación metacarpofalángica del pulgar. Inervación: nervio mediano (rama interósea anterior). Irrigación sanguínea: arteria cubital. By TeachMeSeries Ltd (2026) Fig. 1: músculos flexores profundos de la parte anterior del antebrazo. Característica Pro - Modelo en 3D 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 Característica Pro - Atlas de disección Prosection of the deep compartment of the anterior forearm, with the superficial muscles divided and reflected. Prosection of the deep compartment of the anterior forearm, with the superficial muscles divided and reflected. 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 flexor pollicis longus muscle? The flexor pollicis longus is a muscle located in the deep compartment of the anterior forearm. It plays a crucial role in flexing the interphalangeal and metacarpophalangeal joints of the thumb. Where does the flexor pollicis longus muscle originate and insert? This muscle originates from the anterior surface of the radius and the surrounding interosseous membrane, and it inserts at the base of the distal phalanx of the thumb. What is the primary action of the flexor pollicis longus? The primary action of the flexor pollicis longus is to flex the thumb at both the interphalangeal and metacarpophalangeal joints. This function is essential for gripping and pinching movements. Which nerve innervates the flexor pollicis longus muscle? The flexor pollicis longus is innervated by the median nerve, specifically through its anterior interosseous branch. This innervation is vital for the muscle's motor function. What is the blood supply for the flexor pollicis longus? The blood supply to the flexor pollicis longus muscle comes from the ulnar artery. Adequate blood flow is important for muscle health and function during activities involving the thumb. Valora este artículo