Shared Flashcard Set

Details

Muscles of Shoulder and Arm
n/a
9
Anatomy
Undergraduate 4
05/02/2011

Additional Anatomy Flashcards

 


 

Cards

Term

deltoid

Definition

O: acromion and spine of scapula and lateral one-third of clavicle

I: deltoid tuberosity of humerus

A: flexion and medial rotation of arm (anterior fibers); abduction of arm (lateral fibers); extension and lateral rotation of arm (posterior fibers)

 

Term

trapezius

Definition

O: external occipital protuberance, both nuchal lines, spinous processes of C1-T12

I: acromion, superior spine of scapula, posterior-lateral one-third of clavicle

A: elevate & rotate scapula upward and downward scapula

 

Term

teres minor

Definition

O: lateral border of scapula

I: greater tubercle of humerus

A: lateral rotation of arm

Term

teres major

Definition

O: inferior angle of scapula

I: medial lip of bicipital groove (intertubercular sulcus)

A: medial rotation of arm; also extension and adduction of arm

 

Term

supraspinatus

Definition

O: supraspinous fossa of scapula

I: greater tubercle of humerus

A: aids deltoid in abduction

Term

infraspinatus

Definition

O: infraspinous fossa of scapula

I: greater tubercle of humerus

A: modulates action of deltoid

Term
subscapularis
Definition

O: subscapular fossa of scapula

I: lesser tubercle of humerus, anterior surface of joint capsule

A: modulates action of deltoid, rotates humerus medially

 

Term

rhomboid minor

Definition

O: spinous processes of C7 & T1

I: medial border of scapula at medial angle (where spinous process meets vertebrae)

A: retraction of scapula

Term

rhomboid major

Definition

O: spinous processes of T2-T5

I: medial border of scapula (spinous process down to inferior angle)

A: retraction of scapula

 

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