Upper Extemitiy (muscles, innervations, actions, etc) Flashcards
proximal attachment of pec major?
clavicular head: anterior surface of clavicle
sternocostal head: anterior surface of sternum, superior 6 costal cartilages
distal attachment of pec major
interubtercular sulcus/ groove of humerus
pec major innervation
lateral and medial pectoral nerve
pec major actions individual and together
individual: clavicular head flexes humerus and sternocostal head extends it from flexed postion
together: adducts and medially rotates humerus
pec minor proximal attachment
3rd-5th ribs
pec minor distal attachment
coracoid process of scapula
pec minor innervation
medial pectoral nerve
pec minor actions
depression and protraction of scapula
serratus anterior proximal attachment
1st-8th rubs
serratuis anterior distal attachment
medial border of scapula
serratus anterior innervation
long thoracic nerve
serratus anterior actions
protraction and upward rotation of scapuls
proximal attachment of deltoid
lateral third of clavicle
acromion and spine of scap.
distal attachment of deltoid
deltoid tuberosity of humerus
deltoid innervation
axillary nerve
deltoid actions
anterio: flexion and medially rotates arm
middle: abducts arm
posterior: extension and laterally rotates arm
supraspinatus proximal attachment
supraspinous fossa of scapula
supraspinatus distal attachmentg
greater tubercle of humerus
supraspinatus innervatoin
suprascapular nerve
supraspinatus actions
initiates abduction of arm
infraspinatus proximal attachment
infraspinous fossa of scapula
infraspinatus distal attachment
greater tubercle of humerus