Scapular Region and Posterior Arm Flashcards
What are the attachments of the deltoid?
Proximal: Lateral 1/3 clavicle
Distal: Deltoid tuberosity of humerus
What innervates the deltoids?
axillary nerve
Attachments of Supraspinatous
Proximal: Supraspinous fossa of scapula
Distal: Greater tubercle of humerus
What innervates Supraspinatous?
Suprascapular nerve
What are the attachments of Infraspinatus
Proximal: Infraspinous fossa of scapula
Distal: Greater tubercle of humerus
What are the innervations of Infraspinatous?
Suprascapular nerve
Attachment of Teres major
Proximal: Inferior angle of scapula
Distal: Intertubercular sulcus of humerus
innervations of Teres major
Lower subscapular nerve
attachments of Teres minor
Proximal: Lateral border of scapula
Distal: Greater tubercle of humerus
what innervates Teres minor?
Axillary nerve
What are the attachments of subscapularis
Proximal: Subscapular fossa
Distal: Lesser tubercle of humerus
innervations of subscapularis
upper/lower subscapular nerves
Attachments for long head, medial, lateral head
Proximal: Long head = infraglenoid tubercle of scapula
Medial head and Lateral head = posterior humerus
Distal: Olecranon of ulna
innervation of Long head Medial head Lateral head
Radial nerve
actions of the deltoid
Abducts, flexes and extends the arm
actions of Supraspinatus
initiates arm abduction
actions of infraspinatous
laterally rotates arm
actions of Teres major
adducts and medially rotates arm
actions of Teres minor
laterally rotates arm
actions of Subscapularis
medially rotates arm
actions of Long head
extends arm
actions of long head, medial head and lateral head
extends forearm
