Lab Muscles

Block 1 Muscles Origin/Insertion

latissimus dorsi insertion

intertubucular surface of the humerus

rhomboid major origin and insertion

origin: spinous processes of T2-T5

insertion: medial edge of scapula

rhomboid minor origin and insertion

origin: spinous processes of C7-T1

insertion: medial border of scapula

rhomboid innervation

dorsal scapular nervel

latissimus dorsi innervation

thoracodorsal nerve

deltoid insertion

deltoid tuberosity

deltoid innervation

axillary nerve

supraspinatus origin and insertion

origin: suprascapular fossa

insertion: greater tubercle of humerus

supraspinatus innervation and blood supply

suprascapular nerve and artery

infraspinatus origin and insertion

origin: infrascapular fossa

insertion: greater tubercle of humerus

infraspinatus innervation and blood supply

suprascapular nerve

suprascapular artery AND circumflex scapular artery

teres minor origin and insertion

origin: lateral border of scapula

insertion: greater tubercle of the humerus

teres minor innervation and blood supply

innervation: axillary nerve

circumflex scapular artery

teres major origin and insertion

origin: inferior angle of the scapula

insertion: intertuburcular groove of the humerus

teres major innervation and blood supply

innervation: lower subscapular nerve

circumflex subscapular artery

latissimus dorsi innervation and blood supply

innervation: thoracodorsal nerve

blood supply: throracodorsal artery

trapezius innervation and blood supply

innervation: accessory nerve

blood supply: transverse cervical artery

levatator scapulae innervation and blood supply

innervation : dorsal scapular nerve

and blood supply: dorsal scapular artery

splenius innervation and blood supply

dorsal rami

muscular branches of the aorta

erector spinae muscle innervation

innervation: dorsal rami

semispinalis innervation and blood supply

dorsal rami

deep cervical artery

triceps long head origin and insertion

origin: infraglenoid tuberosity

inesertion: olecranon

triceps medial head origin and insertion

origin: posterior surface of humerus

insertion: olecranon

triceps lateral head origin and insertion

origin: posterior surface of humerus

insertion: olecranon