| | Conditions Treatments | Muscle Strain Is the deltoid muscle innervated by axillary nerve from C5 and C6? The deltoid muscle is innervated by the axillary nerve which originates from the C5 and C6 spinal nerve roots. Muscle Strain - Related Articles Medicare Advantage Guidelines Where do obstetricians work? Medical Diverticulitis Symptoms How to Explain Molluscum Contagiosum on a Child Test for Alcholism An Herbal Remedy for Constipation in an Infant Bottled Water Pros & Cons