Practical 1 Flashcards
Muscles in superior extrinsic shoulder
Trapezius
Latissimus dorsi
Trapezius origin
Base of skull
nuchal ligament
C7-T12
Trapezius insertion
lateral third of clavicle
acromion
spine of scapula
Trapezius action
elevate, depress, retract scapula
rotate glenoid cavity superiorly
Trapezius innervation
spinal accessory nerve
lat. dorsi origin
Spinous process of lower 6 thoracic vertebrae
iliac crest
Thoracolumbar fasica
lat dorsi insertion
the floor of the intertubercular groove
Lat dorsi action
medial rotation of humerus
Extend and adduct humerus
pull trunk to upper limbs for when climbing
lat. dorsi innervation
thoracodorsal nerve
Muscles of deep posterior extrinsic shoulder
Levator scapulae
Rhomboid major
Rhomboid minor
Origin levator scapulae
transverse process C1 - C4
insertion levator scapulae
medial border of scapula - above spine level
action levator scapulae
elevate scapula
rotate glenoid cavity inferiorly
Innervation levator scapulae
dorsal scapular nerve
Origin Rhomboid minor
spinous process C7 and T1
Insertion rhomboid minor
medial border of scapula at level of spine
Action rhomboid minor
retract scapula
rotate glenoid cavity inferiorly
Innervation rhomboid minor
Dorsal scapular nerve
Rhomboid major origin
spinous process T2- T5
Rule of deep posterior extrinsic muscles
4,2,2,4 rule
Insertion rhomboid major
medial border of scapula, level below spine
Innervation rhomboid major
dorsal scapular nerve
action rhomboid major
Retract scapula
rotate glenoid cavity inferiorly
Muscles of intrinsic shoulder
Deltoid
Teres major
Origin deltoid
lateral third of clavicle
acromion
Spine of scapula
Deltoid insertion
deltoid tuberosity
deltoid action
extend and flex humerus
medial and lateral rotation of humerus
abduct humerus
Deltoid innervation
axillary nerve
Teres major origin
posterior surface of scapula
Teres major insertion
intertubercular groove - medial lip
Teres major action
medial rotation of humerus
Adduct humerus
Teres major innervation
lower scapular nerve
Muscles in rotator cuff
Subscapularis
supraspinatus
infraspinatus
teres minor
subscapulris origin
subscapular fossa
subscapularis insertion
lesser tubercle of humerus
subscapularis action
medial rotation of humerus
stabilize shoulder
innervation subscapularis
upper subscapular nerve
lower subscapular nerve
supraspinatus origin
supraspinatus fossa
supraspinatus insertion
greater tubercle of humerous - superior facet
action supraspinatus
adduct humerus
stabilize shoulder
supraspinatus innervation
suprascapular nerve
origin infraspinatus
infraspinous fossa
Infraspinatus insertion
Greater tubercle - middle facet
Action infraspinatus
Lateral rotation of humerus
Stabilize shoulder
Infraspinatus innervation
Suprascapular nerve
Teres minor origin
Lateral border of scapula -superior portion
Teres minor insertion
Greater tubercle of humerus - inferior facet
Action teres minor
Lateral rotation of humerus
Stabilize shoulder