Los músculos interóseos dorsales son músculos intrínsecos de la mano. Se localizan superficialmente en el dorso de la mano y se pueden palpar entre las cabezas de los metacarpianos. Inserciones: cada músculo interóseo se origina en la superficie lateral y medial de los metacarpianos. Se insertan en la cubierta extensora y la falange proximal de cada dedo. Acciones: abducción de los dedos. Ayuda en la flexión de las articulaciones metacarpofalángicas y en la extensión de las articulaciones interfalángicas. Inervación: nervio cubital. Irrigación sanguínea: arterias metacarpianas dorsales. By TeachMeSeries Ltd (2026) Fig. 1: Los músculos interóseos dorsales y palmares de la mano. 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 dorsal aspect of the hand, demonstrating the dorsal interossei. Prosection of the dorsal aspect of the hand, demonstrating the dorsal interossei. 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 are the dorsal interossei muscles of the hand? The dorsal interossei muscles are intrinsic muscles located on the dorsal side of the hand, positioned between the metacarpal heads. They play a crucial role in finger movement and hand function. What is the primary function of the dorsal interossei muscles? The main function of the dorsal interossei muscles is to abduct the fingers, facilitating movements away from the midline of the hand. They also assist in flexing the metacarpophalangeal joints and extending the interphalangeal joints. Where do the dorsal interossei muscles originate and insert? These muscles originate from the lateral and medial surfaces of the metacarpals and insert into the extensor hood and proximal phalanx of each finger. This specific attachment allows them to effectively contribute to finger movements. Which nerve innervates the dorsal interossei muscles? The dorsal interossei muscles are innervated by the ulnar nerve. This nerve supply is essential for their proper function in finger abduction and movement. What is the blood supply for the dorsal interossei muscles? The dorsal interossei muscles receive their blood supply from the dorsal metacarpal arteries. This vascularisation is vital for maintaining muscle health and function. Rate This Article