Muscular system

1. Muscles of
Chest
Muscles of Sh
oulder (INTRI
NSIC)

2. •Deltoid
•Teres Major
•Supraspinatus
•Infraspinatus
•Subscapularis
•Teres minor

3. •Deltoid
• Scapula and clavicle
• Deltoid tuberosity of humerus
• Anterior fibers flex posterior fiber
extend and midle fiber abduct the
arm at shoulder
• Axillary nerve

4. •Teres major
• Inferior angle on posterior surface
of scapula
• Medial lip of Intertubercular sulc
us
• Adducts and medialy rotate the ar
m
• Lower Subscapularis nerve

6. •Supraspinatus
•Suprasinous fossa of scapula
•Greater tubercle of humerus
•Adducts the arm 0-15°
•Suprscapular nerve

7. •Infraspinatus
•Infraspinous fossa of scapula
•Greater tubercle of humerus
•Letraly rotate the arm
•Suprascapular nerve

8. •Subscapularis
• Subscapular fossa on costal surfa
ce of scapula
• Lesser tubercle of humerus
• Medialy rotate the arm
• Upper and lower subscapular ner
ve

9. •Teres minor
•Letral border on posterior sur
face of scapula
•Greater tubercle of humerus
•Letraly rotate the arm
•Axillary nerve