APA 1313 Lecture Notes - Lecture 4: Splenius Capitis Muscle, Nuchal Ligament, Thoracolumbar Fascia

• School: University of Ottawa
• Department: Human Kinetics
• Course: APA 1313
• Professor: Jing L I

Document Summary

Intrinsic muscles : origin and insertion are in a same region. Super cial layer - splenius muscles: cover and hold the deep verticals muscles in position, it is covered by other muscles, origin : arises from nuchal ligament and spinous processes of c& - t3 or t4 vertebrae, insertion : Splenius capitis : mastoid process of temporal bone and lateral third of superior nucach line of occipital bone. Splenius crevices : transverse process of c1-c3 or c4 vertebrae: main action : acting alone, laterally ed and rotate head to the side of active muscles, acting together , extend head and neck. Iliocostalis: bers run superiorly to ribs and cervical transverse processes. Longissimus : to ribs between tubercles and angles, to transverse processes in thoracic and cervical regions, and to mastoid process of temporal bone. Deep layer - transversospinal muscle group: three muscle.