Muscles Of Upper Limb Flashcards
Pectoralis major origin
- Anterior surface of medial two thirds of clavicle.
- Manubrium, sternum
- 2nd to 6th coastal cartilages
- Aponeurosis of external oblique muscles of abdomen.
Pectoralis major insertion
By bilaminar tendon in bicipital groove
Pectoralis minor origin
3,4,5 ribs near costochondral junction
Fascia covering external intercoastal muscles
Pectoralis minor insertion
Coracoid process
Subclavius origin
First rib at costochondral junction
Subclavius insertion
Subclavian groove of clavicle
Nerve supply of pectoralis major
Medial and lateral pectoral nerves
Nerve supply of pectoralis minor
Medial and lateral pectoral nerves
Nerve supply of subclavius
Nerve to subclavius from upper trunk of brachial plexus
Trapezius origin
- medial one third of superior nuchal line
- external occipetal protuberance
- ligamentum nuchae
- C7 spine
- T1-T12 spines
- supraspinous ligaments
Trapezius insertion
- posterior border of lateral part of clavicle
- acromion process
- upper lip of spine of scapula
Lattisimus dorsi origin
- outer lip of iliac crest
- posterior layer of thoracolumbar fascia
- spines of T7-T12
- lower four ribs
- inferior angle of scapula
Lattisimus dorsi insertion
- winds around lower border of teres major
- floor of intertubercular sulcus
Levator scapulae origin
- transverse processes of C1, C2
- posterior tubercles of transverse processes of C3, C4
Levator scapulae insertion
-superior border and upper part of medial border of scapula
Rhomboids major origin
- spines of T2-T5
- supraspinous ligaments
Rhomboids major insertion
Medial border of scapula
Rhomboids minor origin
- lower part of ligamentum nuchae
- spines C7 and T1
Rhomboids minor insertion
-base of triangular area at root of the spine of scapula
Trapezius nerve supply
- spinal part of accessory nerve (XI)
- branches from C3, C4
Lattisimus dorsi nerve supply
Thoracodorsal nerve
Levator scapulae nerve supply
-branch of dorsal scapular nerve
Rhomboids major nerve supply
Dorsal scapular nerve
Rhomboids minor nerve supply
Dorsal scapular nerve
Deltoid origin
- anterior border of lateral part of clavicle
- lateral border of acromion process
- lower lip of crest of spine of scapula
Deltoid insertion
Deltoid tuberosity of humerus
Deltoid nerve supply
Axillary nerve
Supraspinatus origin
Supraspinous fossa of scapula
Passes as a tendon laterally beneath the coracoacromial arch
Supraspinatus insertion
Upper impression of greater tubercle of humerus
Infraspinatus origin
Medial part of infraspinous fossa of scapula
Infraspinatus insertion
Middle impression of greater tubercle of humerus
Teres minor origin
As two slips on upper 2/3 of lateral border of dorsal surface of scapula
Teres minor insertion
Lower impression of greater tubercle of humerus
Subscapularis origin
Medial 2/3 of subscapular fossa
Subscapularis insertion
Lesser tubercle of humerus
Teres major origin
Lower part of dorsal surface of lateral border and inferior angle of scapula
Teres major insertion
Medial lip of bicipital groove
Supraspinatus nerve supply
Suprascapular nerve
Infraspinatus nerve supply
Suprascapular nerve
Teres minor nerve supply
Axillary nerve
Subscapularis nerve supply
Upper and lower subscapular nerves
Teres major nerve supply
Lower subscapular nerve
Coracobrachialis origin
Coracoid process (along with short head of biceps brachii)
Coracobrachialis insertion
Medial border of humerus
Biceps brachii origin
- short head from coracoid process
- long head from supraglenoid tubercle
Biceps brachii insertion
Radial tuberosity
It has twisted tendon which gives off extension called bicipital aponeurosis
Brachialis origin
- Lower half of front of humerus
- medial and lateral intermuscular septa
Brachialis insertion
- coronoid process
- ulnar tuberosity
Coracobrachialis nerve supply
Musculocutaneous nerve
Biceps brachii nerve supply
Musculocutaneous nerve
Brachialis nerve supply
Musculocutaneous nerve
Radial nerve