El músculo aductor del pulgar es un músculo intrínseco de la mano. Tiene forma triangular y dos cabezas. La arteria radial discurre anteriormente por el espacio situado entre las dos cabezas para formar el arco palmar profundo. Inserciones: Una de las cabezas se origina en el tercer metacarpiano. La otra cabeza se origina en el hueso grande y en las zonas adyacentes del segundo y tercer metacarpianos. Ambas cabezas se insertan en la base de la falange proximal del pulgar. Acciones: aducción del pulgar. Inervación: nervio cubital. Irrigación sanguínea: arco palmar profundo. By TeachMeSeries Ltd (2026) Fig. 1: el aductor del pulgar. Fíjate en las dos cabezas del músculo. 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 Prosection of the deeper structures of the hand. The deep branch of the ulnar nerve innervates the majority of the muscles of the hand (except the lateral two lumbricals and the thenar eminence). Note the two-headed structure of the adductor pollicis. Prosection of the deeper structures of the hand. The deep branch of the ulnar nerve innervates the majority of the muscles of the hand (except the lateral two lumbricals and the thenar eminence). Note the two-headed structure of the adductor pollicis. 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 adductor pollicis muscle? The adductor pollicis is an intrinsic muscle of the hand that has a triangular shape and consists of two heads. It plays a crucial role in the adduction of the thumb. What are the attachments of the adductor pollicis muscle? One head of the adductor pollicis originates from the third metacarpal, while the other head arises from the capitate bone and adjacent areas of the second and third metacarpals. Both heads insert at the base of the proximal phalanx of the thumb. What is the innervation of the adductor pollicis muscle? The adductor pollicis muscle is innervated by the ulnar nerve. This nerve supply is essential for its function in thumb movement. What is the blood supply to the adductor pollicis muscle? The blood supply to the adductor pollicis is provided by the deep palmar arch. This vascular supply supports the muscle's metabolic needs during thumb adduction. What is the primary action of the adductor pollicis muscle? The primary action of the adductor pollicis is the adduction of the thumb. This movement is vital for grasping and pinching objects effectively. Rate This Article