Anatomy and Cell Biology 2221 Lecture Notes - Lecture 4: Erector Spinae Muscles, Quadratus Of Athens, Iliac Crest

• School: Western University
• Department: Anatomy and Cell Biology
• Course: Anatomy and Cell Biology 2221
• Professor: grahammatthewfraser

Document Summary

Splenius cervicis: origin: spinous processes of c7-t6, insertion: transverse processes of c2-c4, action: extending vertical column, lateral rotation (individually) Levator scapulae: origin: transverse processes of c1-4, insertion: scapula, action: raises scapula. Semispinalis capitis: origin: spinous processes of spine, insertion: nuchal line and protuberance of occipital bone, action: lateral rotation of opposite side of muscle. Splenius capitis: origin: spinous processes of c7-t6, insertion: mastoid process of temporal bone and occipital bone. Longissimus capitis: longest attached to head: origin: articular process of c4-7 and t1-4, insertion: mastoid process, action: neck extension looking up, rotate head to same side of muscle location. Spot where there is no overlap of muscles. Perfect spot to listen to breathe sounds and heart on. Neck and back muscles that move the spine: Interspinales: really small, connect and provide rotation and postural support, connect spinous process from neighboring vertebra (i. e. t1-t2, contraction= draw spinous process together= extension in region.