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
deltoid muscle 4 points?
triangular shaped
covers and reinforces the shoulder joint
gives the shape of the shoulder
can be palpated
3 parts of deltoid muscle ?
clavicular
acromial
spinal
insretion of deltoid muscle ?
deltoid tubrosity of humerus
action of clavicular part?
flexion and medial rotation
action of acromial part?
abduction 15-90
action of spinal part?
extension and lateral rotation
nerve supply of deltoid muscle?
axillary nerve C5;C6
injection given in //// to avoid injury to axillary nerve ?
lower half
the injection site in the ?
middle of the deltoid muscle
the most commo drug given as shoulder injection for shoulder pain?
cortisone
causes of axillary nerve ?3
dislocated shoulder
surgical neck of the humerus fracture
traction injury to the nerve caused by extensive streching
clinical features of axillary nerve disfunction ?
paralysis to deltoid muscle
reduction in shoulder abducion
atrophy of deltoid muscle
loss of contour over the shoulder
muscle wasting
support the shoulder joint gives stability by holding the head of humerus in the glenoid cavity?
rotator cuff muscles
SITS muscles ?
supraspinatus
infraspinatus
teres minor
subscapularies
supraspinatus muscle orgin
insertion?
action
nerve supply
supraspinous fossa
greater tubercle of humerus
initiation of abduction up to 15
suprascapular nerve C5;C6
infraspinatus muscle orgin
insertion
action
nerve supply
infraspinous fossa
greater tubrcle of humerus
lateral rotation ;extension and adduction of shoulder and strengthen the shouldr by bracing the head of humerus
surascapular nerv
subscapularis muscle orgin
insertion
action
nerve supply
subscapular fossa
lesssr tubrecle
adduction medial rotation and extention
upper and lower subscapular nerve
teres minor muscle orgin
insertion
action
nerve supple
posterior lateral border of scapula
greater tubercle of the humerus
lateral rotationn ;extension and adduction
axillary nerve
teres major muscle orgin
insertion
action
nerve supply
dorsal surfase of inferior angle of scapula
intertubercle groove of the humerus
etends the arm from flexed postion adducts and medial rotates the arm
lower subscapular nerve C567
suprascapular nerve orgin
innervates
branches from the upper trunl of the brachial plxus drived from cervical nerves C5-C6
supraspinatus and the infraspinatus muscles
which muscle suspends scapula on thoracic wall ;draws scapula anterolaterally?
serratus anterior muscle boxer muscle
nerve supply of serratus anterior muscle ?
long thoracic nerve C6;7;5
muscle of back of the arm?
Triceps brachii muscle
three different muscle bundles whicj compose triceps?
long head /infraglenoid tubercle
medial head /upper posterior medial aspect below the radial groove of humerus
lateral head /upper posterior lateral aspect above the radial groove of humerus
insertion of tricepes brachii muscle
olecranon process of the ulna
action triceps brachii muscle ?
extends the forearm at the elbow joint
long head extends and adducts the arm at the shoulder joint
serves as an important surgical land mark in its role forming the anatomical spaces
nerve supply of tricepes brachii muscle ?
radial nerve C5-C8
extension at the elbew joint ?
triceps brachii muscle
what is the major entensor muscle of forearm ?
triceps brachii muscle
extends and adducts the arm 3
tricpes brachii muscle
innervates the entire extensore muscles both arm and forearm?
motor innervation GSE
sensory innervation GSA
lower inferio lateral cutaneous nerve of arm
posterior cutaneous nerve of arm posterior brachial coutenous nerve
posterior cutaneous nerve of forearm
radial nerve passes with the ?
profunda deep bravial artery in the spiral radial groove of the humerus bone
fracture of shaft of humerus 2 structure will be injured
radiadl nerve
deep profunda brachial artery
radial nerve palsy?
extension movement will be compromised ;impaired weakend in arm forearm and wrist
wrist drop loss of sensation
bursas
subtendinous bursa
intraendinous bursa
subcutaneus olecranon bursa
student’s elbow
olecranon bursitis
quadrangular space contents which nerve and that nerve supply which muscles?
axillary nerve
innervates teres minor
deltoid muscle
quadrangular space contents which artery ?
posterior humeral circumflex artery
triangular space medial upper tringular space boders and contents ??
INF/teres major
LA/long head of triceps
SUP/lower border of teres minor
scapular circumflex artery
no nerves
contents of triangular interval ?
radial nerve
profunda brachii artery
