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.
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