Muscles of Upper Limb Flashcards
Pec major does what?
adducts
medially rotates arm
Pec major does what?
adducts
medially rotates arm
secondary purpose of muscles what attach to thoracic wall? how does it work?
inspiratory
fixing humerus and contracting the muscle
name two muscles what attach the anterior scapula/clavicle to throacic wall?
subclavius
pec minor
pec minor origin?
ribs 3,4,5
3 muscles that attach to coracoid?
pec minor
coracoid brachialis
short head of biceps
4 muscles what attach to thoracic cage?
serratus anterior
pec major
pec minor
subclavius
serratus anterior position and action?
lateral thoracic chest wall
strong protractor
winging scapula because?
long thoracic nerve palsy
serratus anterior weakness
Deltoid supplied by?
axillary nerve
3 movements of deltoid:
anterior fibres: flexion
posterior fibres: extension
both: abduction
where do the 3 posterior rotator cuff muscles insert on humerus?
greater tubercle
superior: SS
middle: IS
inferior: TM
what attaches to lesser tubercle of humerus?
subscapularis
teres major does what?
adducts and medially rotates
bicipital groove AKA?
intertubercular sulcus
prime movement for biceps?
supination
does coracobrachialis flex elbow?
nope
brachialis origin/insertion?
mid humerus shaft
coranoid process
secondary purpose of muscles what attach to thoracic wall? how does it work?
inspiratory
fixing humerus and contracting the muscle
name two muscles what attach the anterior scapula/clavicle to throacic wall?
subclavius
pec minor
pec minor origin?
ribs 3,4,5