Muscular system

1. Muscles of
Chest
Muscles of Pe
ctoral region

2. • Pectoralis Major
• Clavicular head from Anterior surface of cl
avicle and sternocostal head from Anterior
surface of sternum; superior six costal cartil
age and aponurosis of external oblique of a
bdomen
• Intertubercular sulcus of humerus
• Adducts and medialy rotate,draw scapula a
nteroinferiorly Clavicular head flex the arm
• Medial and letral pectoral nerve

4. •Pectoralis minor
•3rd -5th rib
•Coracoid process of scapula
•Draw scapula anteroinferiorl
y to stabilise it
•Medial Pectoral nerve

6. • Serratus anterior
• Letral aspect of 1-8 ribs
• Medial border of costal surface
of scapula
• Raise the arm above 90 degree
to rotate it
• Long thoracic nerve

7. •Subclavius
• Junction of 1st costal cartilage a
nd its rib
• Inferior surface of medial third o
f clavicle
• Anchors and depress the clavicle
• Nerve to Subclavius