APA 1313 Lecture Notes - Lecture 5: Splenius Capitis Muscle, Splenius Cervicis Muscle, Splenius Muscles
14 Nov 2016
School
Department
Course
Professor
Document Summary
Muscles study notes - 228, 280, 281 anatomy zone. com. Origin: nuchal ligament and spinous process of c7- Insertion: mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone. Insertion: transverse process of c1-c3 or c4 vertebrae. ***main action: acting alone, laterally ex and rotate head to the side of active muscles; acting together, extend head and neck. Insertion: fibres run superiorly to ribs and cervical transverse processes. Insertion: ribs between tubercles and angles, to transverse processes in thoracic and cervical regions, and to mastoid process of temporal bone. Insertion: spinous processes in the upper thoracic region and to the skull. *** main action: acting bilaterally, extend vertebral column and head; unilaterally, laterally ex vertebral column. Insertion: fibres run superomedially to occipital bone and spinous processes in thoracic and cervical regions. Main action: extends head and thoracic and cervical regions of vertebral column and rotates them contralaterally.
