Anterior TA muscles Flashcards
TA stands for
Thoracoappendicular
Thorax + Upper limb
Origin —> Insertion
4 Ant. TA muscles
Pectoralis Major
Pectoralis Minor
Serratus Anterior
Subclavius
Pec Mj origin
*Medial third of clavicle
Manubrium (top of the sternum)
Body of sternum
Costal cartilages ribs 1-6
Pectoralis Major insertion
*Lateral lip of the inter tubercular groove of the humerus
Pectoralis Major Action
*Adduction, medial rotation and flexion of the arm
Pectoralis Major innervation
*medial and lateral pectoral nerves
Pectoralis Minor origin
*ribs 3-5
Pectoralis Minor insertion
coracoid process of the scapula
Pectoralis Minor action
stability of scapula
scapula down and forward
Pectoralis Minor innervation
medial pectoral nerve
Serratus Anterior origin
Ribs 2-8
Serratus Anterior Insertion
Medial margin (border) of costal (front) surface of the scapula
Serratus Anterior action
keep scapula against thorax
upward rotation of the scapula
Serratus Anterior innervation
Long thoracic nerve
Serratus Anterior arterial supply
lateral thoracic artery
Subclavius origin
1st rib
Subclavius insertion
Inferior aspect of clavicle
Subclavius action
depress clavicle
stabilize joint
Subclavius innervation
Nerve to subclavius (subclavius nerve)
Subclavius arterial supply
clavicular branch of the thoracoacromial artery
Pectoralis Major Arterial Supply
Thoracoacromial Artery
Pectoralis Minor Arterial Supply
Thoracoacromial Artery
Serratus Anterior Arterial Supply
Lateral Thoracic Artery
