Los interespinosos son un conjunto de músculos profundos de la espalda. Generalmente se consideran ausentes de la región torácica. Inserciones: se originan en la apófisis espinosa de las vértebras cervicales y lumbares. Las fibras ascienden y se insertan en las apófisis espinosas de las vértebras superiores. Acciones: contribuyen a la extensión y rotación de la columna vertebral. También estabiliza las vértebras. Inervación: ramos posteriores de los nervios raquídeos. Irrigación sanguínea: Región cervical: arterias vertebral, cervical profunda, occipital y transversa. Región lumbar: arterias lumbares. Adobe Stock, Licensed to TeachMeSeries Ltd Fig. 1: los músculos interespinosos lumbares. El grupo cervical tiene una disposición similar. 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 are the interespinosos muscles? The interespinosos muscles are a group of deep muscles located in the back, primarily absent in the thoracic region. They play a role in extending and rotating the spine while stabilising the vertebrae. Where do the interespinosos muscles originate and insert? These muscles originate from the spinous processes of the cervical and lumbar vertebrae and ascend to attach to the spinous processes of the superior vertebrae. What actions do the interespinosos muscles perform? The interespinosos muscles contribute to the extension and rotation of the vertebral column, as well as providing stability to the vertebrae during movement. How are the interespinosos muscles innervated? The interespinosos muscles receive their nerve supply from the posterior rami of the spinal nerves, which control their motor functions. What is the blood supply to the interespinosos muscles? In the cervical region, the interespinosos muscles are supplied by the vertebral, deep cervical, occipital, and transverse arteries, while in the lumbar region, they receive blood from the lumbar arteries. Rate This Article