1. Structure and Function: Answer -Responsible for coordinating and regulating all bodyfunctions -Consists of: -Central nervous system -Peripheral nervous system 2. Central Nervous System: Answer -Composed of brain and spinal cord -Covered with meninges: protect and nourish CNS -Subarachnoid space:surrounds brain and spinal cord, filled with cerebrospinal fluid (CSF), cushions brain and spinal cords, nourishes CNS, removes waste products -Neurons: govern electrical activity throughout sensory and motor neural pathways -Upper motor neurons in CNS influence lower motor neurons in peripheral nervous system 3. The Brain: Answer -Composed of cerebrum, diencephalon, brain stem, cerebellum -Cerebrum: consists of four lobes: frontal, parietal, temporal, occipital (see Table25-1 for functions) -Diencephalon: consists of thalamus, hypothalamus -Brain stem: consists of midbrain, pons, medulla oblongata -Cerebellum: has two hemispheres 4. Brain: 5. Spinal Cord: Answer -Located in vertebral canal. -Extends from medulla oblongata to the first lumbar vertebra.