Muscles Flashcards
Where does the upper fibers of the upper trapezius originate ?
Base of skull , occipital protuberance , and posterior ligament of neck
Where does the upper trapezius insert ?
Posterior aspect of lateral 1/3 of clavicle
What are the actions of upper trapezius
Elevation and upward rotation
Trapezius middle fibers originate from
Spinous process of 7th cervical
Trapezius middle fibers insert into ..?
Medial border of acromion process and scapular spine
Trapezius middle fibers actions are to ..?
Elevate the scapula , upward rotation and ad- duction (retraction ) of scapula
Trapezius Lower fibers originate from..?
Spinous process of thoracic vertebrae 4-12
Where does the lower trapezius insert into ?
Base of scapular spine
Actions of the lower trapezius are
Depression , ad-duction (retraction ) and upward rotation
Levator scapula originates from
Transverse process of up 4 cervical vertebrae
Levator scapulae inserts into
The medial border of scapula
Actions of Levator scapula ?
Elevates medial margin of scapula downward rotation and adduction
Rhomboids origin
Spinous process of last cervical and 1-5 thoracic vertebrae
Rhomboids insertion
Medial border of scapula
Actions of rhomboid
Adduction (retraction ) downward and upward rotation and elevation
