Anatomy and Cell Biology 2221 Lecture Notes - Dorsal Scapular Nerve, Latissimus Dorsi Muscle, Bicipital Groove

• School: Western University
• Department: Anatomy and Cell Biology
• Course: Anatomy and Cell Biology 2221
• Professor: Brian L Allman

Document Summary

The trapezius can perform different movements at different locations. The main action of these muscles is at the shoulder. The accessory nerve (11th cranial) innervates the trapezius (worrier"s muscle) Shoulder extension, flexion medial and lateral rotation of arm abduction. Assists the trapezius in retraction, and rotation of scapula. Starts abduction and lies in the suprascapular fossa. Attach to the greater tubercle of the humerus. Attaches to the intertubercular sulcus of the humerus. Attach to the lesser tubercle of the humerus. Hugging the spines of the spinal column b. c. Attach transverse to spinous processes a. b. c. Rotatores muscle is deep to the semispinalis and multifidus muscles. Lower (l4, l5), deep muscles attach to lower vert. Spinous processes of c7 to t12 superior edge of spine of scapula. Medial border of scapula above base of spine. Medial border of scapula at base of spine of scapula. Medial border of scapula below base of spine of scapula.