Damage to vital brain areas. Other brain areas take over lost function. Increased blood glucose. Increased blood flow to skeletal muscle. Dilation of pupils.
Division is activated as a unit .
Preganglionic neurons originate in thoracic and lumbar regions of the spinal cord. Most ganglia lie near the spinal cord in the sympathetic chain . NE binds to adrenergic receptors on effector organs. Adrenal medulla is innervated by sympathetic preganglionic neurons. Secretes epinephrine in response to sympathetic stimulation.