THE BACK AND UPPER LIMB MUSCLES Flashcards
Name the muscle
Deltiod
Deltiod
Deltoid
nerve supply of the deltoid?
axillary nerve
axillary nerve
nerve supply of the deltoid?
Proximal attachment of the deltoid
- lateral ⅓ clavicle
- acromion
- spine of the scapula
- lateral ⅓ clavicle
- acromion
- spine of the scapula
Proximal attachment of the deltoid
Distal attachment of the deltoid:
deltoid tuberosity of the humerus
deltoid tuberosity of the humerus
Distal attachment of deltoid
actions of the deltoid muscle?
flexes/rotation/ abducts the arm
Teres major and minor
Teres major
Nerve supply of teres major
lower subscapularis nerve
lower subscapularis nerve
nerve supply of teres major
The proximal attachment of teres major:
posterior surface and inferior corner of the scapula
posterior surface and inferior corner of the scapula
Proximal attachment of teres major:
Distal attachment of teres major:
medial lip of the intertubercular groove of the humerus
the medial lip of the intertubercular groove of the humerus
Distal attachment of teres major
Action of teres major:
adduction and medial rotation of the arm
Rotator cuff muscles
Supraspinatus
Infraspinatus
Teres minor
Subscapularis
supraspinatus
supraspinatus
Nerve to the supraspinatus:
suprascapular nerve
Distal attachment of supraspinatus:
superior facet of the greater tubercle of the humerus
The proximal attachment of supraspinatus:
supraspinous fossa
The main action of the supraspinatus:
helps deltoid in abduction of the arm and
acts with the rotator cuff
infraspinatus
Nerve to the infraspinatus
suprascapular nerve
Proximal attachment of the infraspinatus:
infraspinous fossa
Distal attachment of the infraspinatus
middle facet of the greater tubercle of the humerus
Main action of the infraspinatus:
- lateral rotation
- helps keep the humerus head in the glenoid cavity
teres minor
teres minor
Nerve to the teres minor :
axillary nerve
Proximal attachment of the teres minor:
middle part of the lateral border of the scapula