posterior muscles (q7) Flashcards
action of erector spinae
prime mover of back extension
origin of trapezius
occipital bone, ligamentum nuchae, and spinous processes of c7-t12
insertion of trapezius
spine and acromion of scapula, lateral 1/3 of the clavicle
action of trapezius
stabilizes, elevates, retracts, depresses, and upward rotates the scapula
origin of levator scapulae
transverse processes of c1-c4
insertion of the levator scapulae
superior vertebral border of the scapula
origin of rhomboideus major
spinous processes of t2-t5
insertion of rhomboideus major
vertebral border of scapula from spine to inferior angle
action of rhomboideus major and minor
adducts and downward rotates scapula
origin of rhomboideus minor
spinous processes of c7-t1
insertion of rhomboideus minor
vertebral border of scapula, superior to spine of scapula
origin of teres major
inferior angle of scapula
insertion of teres major
intertubercular groove of humerus
action of teres major
extends, adducts, and medially rotates arm
origin of latissimus dorsi
spinous processes of t7-t12, l1-l5, ribs 8-12, and iliac crest of os coxa
insertion of latissimus dorsi
intertubercular groove of the humerus
origin of supraspinatus
supraspinous fossa of the scapula
insertion of the supraspinatus
greater tubercle of humerus
action of supraspinatus
abducts arm; stabilizes shoulder joint
origin of infraspinous
infraspinous fossa of the scapula
insertion of infraspinous
greater tubercle of humerus
action of infraspinous
laterally rotates arm; stabilizes shoulder joint
origin of subscapularis
subscapular fossa of the scapula
insertion of subscapularis
lesser tubercle of humerus
action of subscapularis
prime mover of arm medial rotation; stabilizes shoulder joint
origin of teres minor
lateral scapular border
insertion of teres minor
greater tubercule of humerus
action of teres minor
laterally rotates arm; stabalizes shoulder joint
origin of long head of triceps brachii
infraglenoid tubercle of scapula
origin of lateral head of triceps brachii
proximal end of lateral humeral margin
origin of medial head of triceps brachii
distal to radial groove on posterior humeral shaft
insertion of triceps brachii
olecranon process of ulna
action of triceps brachii
prime mover of forearm extension; extends arm
origin of aconeus
lateral epicondyle of the humerus
insertion of anconeus
lateral process of olecranon process of ulna
action of anconeus
extends forearm; abducts ulna during forearm pronation
a
trapezius
b
splenius capitis and cervicis
c
levator scapulae
a
supraspinatus
b
infraspinatus
c
teres minor
d
teres major
e
long head of the triceps brachii
f
lateral head of the triceps brachii
g
aconeus
a
subscapularis
b
teres major
c
tendon of latissimus dorsi
d
medial head of triceps brachii
e
flexor carpi ulnaris
f
palmaris longus
g
flexor carpi radialis
h
flexor digitorum superficialis
a
flexor digitorum profundus
b
flexor pollicis longus
c
flexor retinaculum
a
supraspinatus
b
infraspinatus