1 Rheumatoid arthritis (RA), an autoimmune disease that can cause pain in the joints. 2  RA occurs when the immune system attacks the joints and muscles causing joint pain and stiffness. 3  Lupus, an autoimmune disease like RA, that causes inflammation in the joints, as well as in the tendons, skin and other connective tissues. Lupus, an autoimmune disease like RA, that causes inflammation in the joints, as well as in the tendons, skin and other connective tissues. 2  Gout, which occurs when uric acid crystals build up in the joints, and causes joint inflammation, pain and tenderness.
Although the ANS is also known as the visceral nervous system the ANS is only connected with the motor side. Most autonomous functions are involuntary but they can often work in conjunction with the somatic nervous system which provides voluntary control.
The Peripheral Nervous System is divided into two sub-systems. The Somatic Nervous System â primary function is to regulate the actions of the skeletal muscles. Often thought of as mediating voluntary activity.eâll discuss the Central Nervous System first. The Central Nervous System consists of the brain and the spinal cord. The Cerebral Cortex, which is involved in a variety of higher cognitive, emotional, sensory, and motor functions is more developed in humans than any other animal.