BIOL G220L: Ch. 11 & 12 (A, O, I) Flashcards
A/O/I from axial skeleton muscles (Ch. 11) and appendicular skeleton muscles (Ch. 12)
pectoralis minor action (2)
protracts and depresses scapula
serratus anterior A/O/I (3)
A: agonist in scapula protection
superiorly rotates scapula
stabilizes scapula
O: Ribs 1-8
I: Medial border of scapula
levator scapulae action (2)
elevates scapula
inferiorly rotates scapula
rhomboid major action (3)
elevates scapula
adducts scapula
inferiorly rotates scapula
rhomboid minor action (3)
elevates scapula
adducts scapula
inferiorly rotates scapula
trapezius action (3)
superior fibers: elevate and superiorly rotate scapula
middle fibers: retract scapula
inferior fibers: depress scapula
latissimus dorsi A/O/I (3)
A: agonist of arm extension
adducts arm
medially rotates arm
O: Spinous process T1-T12
I: Intertubercular groove (humerus)
pectoralis major A/O/I (3)
A:agonist of arm flexion
adducts arm
medially rotates arm
O: Clavicle - Rib 6
I: Intertubercular groove (humerus)
deltoid A/O/I (3)
A: anterior fibers: flex and medially rotate arm
middle fibers: agonist of arm abduction
posterior fibers: extend and laterally rotate arm
O: Acromion process and scapula spine
I: Deltoid tuberosity (humerus)
teres major action (3)
extends, adducts, medially rotates arm
triceps brachii (long head) A/O/I (2)
A: extends and adducts arm
O: scapula and posterior proximal humerus
I: Olecranon process (ulna)
biceps brachii A/O/I
A: supination
O: scapula
I: radius
rotator cuff muscles action
stabilize the glenohumeral joint
subscapularis action
medially rotates arm
supraspinatus action
abducts arm
infraspinatus action (2)
adducts and laterally rotates arm
triceps brachii action
extension
brachialis A/O/I
A: flexion
O: distal humerus
I: coronoid process of ulna
biceps brachii action (2)
flexion and supination
brachioradialis action
flexion
pronator teres action
pronation
supinator action
supination
extensor digiti minimi action
extension
extensor carpi ulnaris action
extension
abductor pollicis longus action (2)
abducts thumb
extends wrist
abductor pollicis longus action (2)
abducts thumb
extends wrist
extensor pollicis brevis action
extension
extensor pollicis longus
extension
flexor pollicis brevis action
flexion
abductor pollicis brevis action
abduction
flexor digiti minimi brevis action
flexion
lumbricals action (2)
flexion
extension
dorsal interossei action (3)
abduction
flexion
extension
adductor pollicis action
adduction
flexor carpi radialis action (2)
flexion
abduction
palmaris longus action
flexion
flexor carpi ulnaris action (2)
flexion
adduction
flexor digitorum superficialis action
flexion
flexor pollicis longus action
flexion
flexor digitorum profundus action
flexion
extensor carpia radialis longus action (2)
extension
abduction
extensor carpi radialis brevis action (2)
extension
abduction
extensor digitorum action
extension
gluteus medius action
abduction
gluteus minimus action
abduction
tensor fasciae latae action
abduction
adductor brevis, longus, magnus action
adduction
gracilis action
adduction
pectineus action
adduction
gluteus maximus action
extension
adductor magnus (hamstring part) action
extension
biceps femoris (long head) action
extension
semimembranosus action
extension
semitendinosus action
extension
iliopsoas action
flexion
adductor brevis, longus, magnus (adductor part) action
flexion