3Function of the Nervous System Control center for all body activitiesResponds and adapts to changes that occur both inside and outside the body (Ex: pain, temperature, pregnancy)Carries electrical messages to and from the brain and spinal cord.When the brain ceases functioning, the body dies.
4Structures of the Nervous System Nervous System is divided into:Central nervous system (brain and spinal cord).Peripheral nervous system (cranial nerves and spinal nerves)Nerve is one or more bundles of impulse carrying fibers that connect the brain and spinal cord with body.
5Central Nervous System Neurons : microscopic nerve cells that make up the brain, spinal cord, and nerves- 30,000 neurons can fit on a pinhead
6Parts of the brain Brains (encephalo) divided into: Cerebrum CerebellumBrainstem
8Medical terms related to nervous system Alzheimer disease: Brain disorder marked by deterioration of mental capacityEpilepsy: Chronic brain disorder characterized by recurrent seizure activity.Meningitis: Inflammation of the meninges (membranes surrounding the brain and spinal cord)Multiple sclerosis: Destruction of the myelin sheath on nerve cells in the central nervous system , with replacement by hard tissues.
9Diagnosis procedureCerebral angiography:X-ray image of blood vessels in the brain after injection of contrast
10Echoencephalography(C.C.G): Record of the electrical activity in the brainComputed tomography (C.T scan):Cross-sectional x-ray images of the brain and spinal cord
11Surgical therapeutic procedure Cryosurgery (An instrument with a nozzle is used to spray liquid nitrogen or liquid carbon dioxide to freeze and destroy abnormal tissue)spinal puncture, spinal tap3.vagotomy (removal of, or at least severing) of part of the vagus nerve
12Some abbreviationsEEG: electro encephalon gramLP: lumber punctureMS: multiple sclerosisCNS: Central nervous systemCVA: cerebra vascular accidentICP: intra cranial pressureMRI: Magnetic resonance imaging