3 Flashcards
muscles that attach the upper limb to axial skeleton anterior (pectoral regıon)and medial muscles?
pectoralis major and minor
subclavius muscle
serratus anterior muscle
pectoralis major muscle?4 points
pecs muscle
superfacial muscle located anterior surface of the thoracic cage
in females is located just behind the brest yissue
the deep surface of the muscle covers the pectoralis minor and serratus anterior muscle and the upper six ribs
pectoralis major orgin
insertion
action
nerve supply
clavicle ;sternocostal;abdominal part
intertubercle sulcus of humerus
adduction ;medial rotation and flexion of the shoulder
M/pectoralC8’T1
L/pectoralC5-C7
what forms the anterior wall of the axilla ?
pectoralis major
pectoralis has groove?
and what passes through it?
deltopectoral groove
cephalic vein
triangular depression between the pectoralis major ;deltoid and clavicle ?
what is it for?
deltopectoral triangle or
infraclavicular fossa
clinical examnations
diagonstic
medial and lateral pectoral nerves injury?
pectoralis major muscle paralysis~difficult to move the arms towards each other
pronounced areolar asymmetry due to atrophy of pectoralis major muscle
pectoralis minor orgin
insertion
action
nerve supply
3;4;5 ribs
insertin coracoid process of scapula
pulls the shoulder towards the chest protraction
depression of shoulser
if the shoulder fixed the ribs pushed towards the shoulder forced inspiration
medial pecctoral nerve C8;T1
SUBCLAVIUS MUSCLE OORGIN
insertion
action
nerve supply
1st rib at the costachondral junction
bottom surfaceof middle part of the clavicle ;subclavian groove
depress the shoulder
when the clavicle is fixed it elevates the 1st rib
nerve to subclavius from upper trunk of B P C5 C6
WINGED SCAPULA WHICH MUSCLE AND NERVE?
serratus anterior muscle
long thoraic nerve lesion
anterior aspect of arm ?
Biceps bracchii muscle
Brachialis muscle
coracobrachialis muscle
biceps brachii muscle orgin
insertion
action
nerve supply
short haed from carcoid process
long head from supraglenoid tubercle of scapula
radial tuberosity
flexion of arm and forearm
powerful supination of partially flexed forearm
musculocutaneous nerve C5-C7
powerful supinator ?
biceps brachii muscle
what does hold the biceps muscle ?
trensevers humeral ligaments
the repture of transverse humeral ligament ?
casuing the shealth to slid back and forth leading to a wear and tear effect on the long head of biceps tendon
erpetitive microtrauma can also lead to inflammation of the tendon
helping to protect the brachial artery and the median nerve
separates it from the median cubital vein !!
bicipital aponeurosis that isert into deep fascia
when abiceps tendon ruptures ;the muscle belly changes position in the arm
popeye’s sign
action of brachialis muscle ?
powerful and the main flexor of forearm
orgin
insertion
nerve supply
of brachialis muscle
distal half of the anterior humerus
coronoid process of ulna
ulnar tuberosity
coracobrachialis orgin
insertion
action
nerve supply
coracoid prosess of scapula
mid part of medial surface of the humerus
flexes;adducts and medially rotates the arm
musclocutaneous nerve c5-C7
musclocutaneous nerve runs through which muscle?
coracobrachialis muscle
musclocutaneous nerve from ?
lateral cord of the brachial pelexus
causes of musclocutaneous nerve?
compression
overuse
strenuous activity
trauma
surgery
clinical features of musculocutaneous nerve ?
Reduced function of flexion and supination of forearm
skin sensory loss of anterolateral aspect of forearm
the artery that supplies the arm ;elbow;forearm and hand ?
bracial artery
//////after it passes the teres major muscle it forms the bracial artery
the axillary artery
branches of brachoal artery?
profunda deep bracial art
superior ulnar cllateral art
inferior ulnar art
ulnar art
radial art
profunda deep brachial artery?
divides into 2 branches
radial cllateral =anterior descanding branch
middle collateral =posterior descending branvh
brachial artery branches ???????????
superior ulnar collateral artery
inferior ulnar collateral artery
both brachial artery and profunda brachii give important branches that form ///////
elbow anastomoses
supracondylar fracture of humerus ?
brachial artery
median nerve
medial epicondyle fracture?
ulner nerve
muscle can stand ischmia for ///////after that they will///////
6 h
undergo necrosis
[ ] Shortage of oxygen required causing tissue damage or dysfunction
ischmia
veins
anatomical
blood flow from periphery to the heart
lowe oxygen
branches downwards
arteries
antomical
blood flow from the heart to the periphery with high oxygen
branches upwards
superficial veins located in the///////
superficial fascia /subcutaneous tissue
drain the superficial regions of the arm
cephalic vein/lateral
basilic vein/medial
basilic vein 3 p!!!
at lower 1/3 of the arm dives deep
it perforates the deep fascia
units with the brachial vein to form the axillary vein
anastomosis between the deep and the superficial veins /////
perforating
between two veins there is ///
one artery
