Extra-ocular muscles that participate in the vestibular ocular reflex (VOR). These muscles are paired with the semi-circular canals of the vestibular system to allow the eyes to maintain stabilized during slow movements of the head.
When you breathe deeply into your belly, it stimulates the vagus nerve, which then sends a message to the brain telling it to make the body relax. Stress hormone production is reduced, and other physiological stress effects (like capillary constriction, muscle tension, decreased digestion, etc.) are improved as well. The result? In the moment, you feel better and in the long-term you help prevent disease.
Of the three motions, the deltoid acts most powerfully in abduction. The C5 neurologic level supplies sensation to the lateral arm from the summit of the shoulder to the elbow. The purest patch of axillary nerve sensation, pictured here on the right, lies over the lateral portion of the deltoid muscles. This localized sensory area within the C5 dermatome is useful for indicating specific trauma to the axillary nerve, as well as general trauma to the C5 nerve root.
Many people suffer from sciatica, a painful lower back condition caused by a pinched nerve. Sciatica can cause severe mobility problems and debilitating pain. In serious cases, the condition can lead to progressive lower extremity weakness, numbness in the upper thighs, and/or loss of bladder or bowel control.