tailieunhanh - Lecture Medical assisting: Administrative and clinical procedures with anatomy and physiology (4/e) – Chapter 25

Chapter 25 - The nervous system. After completing chapter 25, you will be able to: Explain the difference between the central nervous system and the peripheral nervous system, describe the functions of the nervous system, describe the structure of a neuron, describe the function of a nerve impulse and how a nerve impulse is created,. | 25 The Nervous System 25- Learning Outcomes Explain the difference between the central nervous system and the peripheral nervous system. Describe the functions of the nervous system. Describe the structure of a neuron. Describe the function of a nerve impulse and how a nerve impulse is created. 25- Learning Outcomes (cont.) Describe the structure and function of a synapse. Describe the function of the blood-brain barrier. Describe the structure and functions of meninges. Describe the structure and functions of the spinal cord. 25- Learning Outcomes (cont.) Describe the location and function of cerebrospinal fluid. Define reflex and list the parts of a reflex arc. List the major divisions of the brain and give the general functions of each. Explain the functions of the cranial and spinal nerves. 25- Learning Outcomes (cont.) Describe the differences between the somatic nervous system and autonomic | 25 The Nervous System 25- Learning Outcomes Explain the difference between the central nervous system and the peripheral nervous system. Describe the functions of the nervous system. Describe the structure of a neuron. Describe the function of a nerve impulse and how a nerve impulse is created. 25- Learning Outcomes (cont.) Describe the structure and function of a synapse. Describe the function of the blood-brain barrier. Describe the structure and functions of meninges. Describe the structure and functions of the spinal cord. 25- Learning Outcomes (cont.) Describe the location and function of cerebrospinal fluid. Define reflex and list the parts of a reflex arc. List the major divisions of the brain and give the general functions of each. Explain the functions of the cranial and spinal nerves. 25- Learning Outcomes (cont.) Describe the differences between the somatic nervous system and autonomic nervous system. Explain the two divisions of the autonomic nervous system. Describe the causes, signs and symptoms, and treatments of various diseases and disorders of the nervous system. 25- Introduction Highly complex system of two parts Central nervous system (CNS) Peripheral nervous system (PNS) Controls all other organ systems and is important for maintaining balance within those systems Disorders are numerous and often difficult to diagnose and treat 25- General Functions of the NS CNS Brain Spinal cord PNS Peripheral nerves Two sections Somatic nervous system (SNS) Skeletal or voluntary muscles Autonomic nervous system (ANS) Automatic functions 25- General Functions (cont.) Three types of neurons Afferent or sensory nerves Sensory information from environment or inside body to CNS for interpretation Efferent or motor nerves Impulses from CNS to PNS to allow for movement or action Interneurons Interpretive neurons between afferent and efferent nerves in .