Common side effects include no periods, abdominal pain, headaches, and anxiety. Other serious side effects include bone loss, blood clots, allergic reactions, depression, and liver problems. Use is not recommended during pregnancy as it may harm the baby. It works by decreasing the body's release of gonadotropins.
The brain makes up the largest portion of the central nervous system, and is often the main structure referred to when speaking of the nervous system. The brain is the major functional unit of the central nervous system. While the spinal cord has certain processing ability such as that of spinal locomotion and can process reflexes, the brain is the major processing unit of the nervous system.
Major subdivisions of the nervous system. It is best to begin by thinking in very general terms about the function of the nervous system. The nervous system is a network of millions of cells which communicate with one another by means of nerve impulses transmitted along axons of nerve cells.he best functional definition of an axon is that it is a nerve process which is capable of transmitting a nerve impulse (action potential) over some distance. The nervous system also contains cells which are not neurons and which do not DIRECTLY participate in the task of sending and receiving electrical signals.