Anterior Thoracoappendicular Muscles Flashcards
Pectoralis Major origin
Medial 1/2 of clavicle
Manubrium
Sternum
Insertion of pec major
Intertubercular groove of humerus (lateral lip)
Pectoralis minor origin
Ribs 3-5
Pec minor insertion
Coracoid process of scapula
Pec minor action
Stabilize scapula
Draws scapula inferiority and anteriorly against the thorax
Used for stretching out to grab something infront of you
Serrated anterior origin
Lateral surface of ribs 1-8
Serratus anterior insertion
Scapula
Anterior surface,medial border
Action of the serratus anterior
Protraction of scapula
Holds scapula against thorax
Rotation of scapula
Subclavius origin
Rib 1
Subclavius insertion
Clavicle ~ inferior aspect (middle 1/3)
Action of Subclavius
Anchors and depresses clavicle
Stabilizes clavicle during movement of upper limb
Resists tendency for clavicle to dislocate at sternoclavicular joint
What does PLT mean
When looking at the intertubercular groove of humerus from
P= pec major
L = latissimus Doris
T = teres major
Borders of the axilla
Anterior, posterior, medial, lateral, base
Anterior wall is…
Pec major and pec minor
Posterior wall is…
Latissimus Doris
Subscapularis
Teres major
