Table: Nerve roots vs Motor reflex/Muscle function

Table: Nerve roots vs Motor reflex/Muscle function

Table 8. Muscle Function and Nerve Supply
Muscle	Motion	Nerve Root
Deltoid	Shoulder abduction	C-5
Infraspinatus	Shoulder external rotation	C-5
Biceps	Elbow flexion	C-5,6
Extensor carpi radialis	Wrist extension	C-6
Extensor digitorum Triceps	Finger extension Elbow extension	C-7
Interossei and lumbricalis	Digitial abduction/ adduction	C-8, T-1
Quadriceps Iliopsoas Adductor group	Knee extension Hip flexion Thigh adduction	L-2,3,4
Tibialis anterior Extensor hallucis	Ankle dorsiflexion Great toe dorsiflexion	L-5
Gastrocnemius	Ankle plantar function	S-1

Table 9. Motor Reflex and Nerve Supply
Reflex	Muscle	Nerve Root
Biceps tendon	Biceps	C-5,6
Triceps tendon	Triceps	C-7,8
Patellar tendon	Quadriceps	L-2,3,4
Achilles tendon	Gastrocnemius	S-1

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