Lecture 6: Muscles Of The Shoulder Girlde And Arm Flashcards
Innervation of the Trapezius Muscle
Accessory Nerve (CN XI) and Cervical Nerves C3 and C4
Actions of Superior Fibers of the Trapezius
Elevates, rotates scapula superiorly
Extends head and neck
Contra lateral rotation of head and neck
IpsiLateral flexion of head and neck
Action of middle fibers of trapezius
Retracts scapula
Action of inferior fibers of trapezius
Depresses scapula
Superior rotation of scapula
Origin of Trapezius
Medial 1/3 of superior nuchal line
EOP (inion)
Ligamentum nuchae
Spinous Processes C7-T12
Insertion of Trapezius
Lateral 1/3 of clavicle
Acromion process
Spine of scapula
Origin of Superior Fibers of Trapezius
External Occipital Protruberance
Superior Nuchal Line
Nuchal ligament
Insertion of Superior Fibers of Trapezius
Post aspect of lateral 1/3 of clavicle
Acromion
Other name for superior fibers of Trapezius Muscle
Descending part of Trapezius
Origin of Middle Fibers of Trapezius
SP C7-T5
Insertion of Middle Fibers of Trapezius
Acromion
Lateral end of spine of scapula
Other name for Middle Fibers of trapezius
Transverse Part of Trapezius Muscle
Other name for Inferior Fibers of Trapezius
Ascending part of Trapezius
Origin for Inferior Part of Trapezius
SP T6–T12
Insertion for Inferior Fibers of Trapezius
Medial End of Spine of Scapula
Origin of Latissimus Dorsi
- SP T7-S5 via thoracolumbar fascia
- Post Iliac Crest
- Ribs 10-12
- Inferior angle of the scapula
Insertion of Latissimus Dorsi
- Medial lip of intertubecular groove
- Floor of bicipital groove of the humerus
Innervation of Latissimus Dorsi
Thoracodorsal nerve
(C6, 7, 8)