2 Flashcards
what are the superficial muscles ?
trapezius
levator
rhomboid minor
rhomboid major
latissimus
the orgin of trapezius muscle?
external occipital bone
nucal ligament 7th c
all thoracic v
spinous process
fibers of trapezius muscle ?
superior whic are descending fibers
middle
inferior which are ascending fibers
insertion of trapezius muscle ?
superior to the third lateral clivical bone
middle to acromion
inferior to the spine of scapula
action of trapezius muscle ?
S:elevates and upwarly rotates the scapula
m:retract the scapula/shoulder
IN:draw the scapula
abduction
nerve supply of trapezius?
spinal accessory nerve cnXI
SYMPTOMS of tapezius inj?
pain in trapezius muscle
difficulty in moving shoulder
trapezius wasting
latissimus dorsi muscle its orgin ?
T6-T12
all lumbar v
sacrum
iliac crest
thoracolumbar fasia
inferoir angle
9-12 ribs
insertion of latissimuus muscle ?
intertubercla groove between m and l lips
nerve supply of latissimus muscle?
thoracodorsal C6-C8 middle subscapular nerve
action of latissimus muscle ?
extention ;adducts and nedial rotation of arm
pulls the trunks upweards
injuery of latissimus muscle ?
cause surgery in axilla
persone is unable to raise the trunk
difficulty in swimming
orgin of levator muscle?
transveres process of C1-C4
insrtion of lavetor muscle ?
medial border of scapula
superior angle upper portion
action of lavetor muscle?
elevates the superior angle of scapula downwards the lateral border
rotate the glenooid cavity
nerve supply of lavetor muscle ?
dorsal scapular nerve
C5
levator scapula muscle syndrome ?
neck becomes stiff from muscle strains
orgin of rhomboid muscle ?
nucal ligament spinous processes of C7-T1
insertion of rhomboid minor muscle ?
medial border of scapula
root of spine of scapula
nerve supply of rhomboid muscles ?
dorsal scapular nerve
Action: of rhomboid muscles
Draws (retracts) scapula
superomedially Rotates glenoid
cavity inferiorly
– Supports position of scapula
and fixes it to thoracic wall
muscles of shoulder region girdle?
deltoid muscle
supraspinatus muscle
infraspinatus muscle
subscapularies muscle
teres major muscle
teres minor
all of the muscles of the shoulder arise from? there is exception
from the scapula all from the dorsal surface except subscapularis m from the anterior s
muscles of shoulder region girdle inserted ?
in the greater tubercle of humerus
which muscles rotate the arm medially and laterally?
muscles of the shoulder region
muscle of shoulder region adduct the arm except?
supraspinatus muscle tand deltoid they abduct