LAB 2nd ORDER ACTIONS/INN

triceps brachii long head action

extends and adducts arm

triceps brachii long head innervation

radial N

semitendinosus action

extends thigh, flex and medially rotates leg

semitendinosus innervation

sciatic N

gastrocnemius action

plantarflexion and flexes leg

gastrocnemius innervation

tibial N

pectoralis major action

agonist of arm flexion, adducts and medially rotates arm

pectoralis major innervation

lateral and medial pectoral nerves

biceps brachii long head action

flexes arm and forearm

biceps brachii long head innveration

musculocutaneous n

coracobrachialis action

flex and adduct arm

coracobrachialis innervation

musculocutaneous n

brachioradialis action

flexes forearm

brachioradialis innervation

radial n

rectus femoris action

flexes thigh and extends leg

rectus femoris innervation

femoral n

adductor longus action

adducts and flexes thigh

adductor longus innervation

obturator n

tibialis anterior action

dorsiflexion and inversion

tibialis anterior innervation

deep fibular n

flexor digitorum superficialis action

flexes hand, flex MP and PIP joints

flexor digitorum superficialis innervation

median N

flexor digitorum profundus action

flexes hand, flex MP, PIP, and DIP joints

flexor digitorum profundus innervation

lateral half- median N, medial half- ulnar N

fibularis longus action

eversion and weak plantarflexion

fibularis longus innervation

superficial fibular n

lumbricals (foot) action

flex toes

lumbricals (foot) innervation

1st- median plantar n, 2nd-4th- lateral plantar n