Peripheral Nervous System

  1. Describe the general structure of a neuron. 

    1. Label the structures on a diagram using cell body, dendrite, axon, Schwann cell, myelin sheath, and nodes of Ranvier. 

  1. Explain how differences in function are used to classify neurons as sensory neurons, interneurons, and motor neurons. 

  1. Identify the functions of neuroglia including oligodendrocytes and Schwann cells.

  1. Explain how a membrane becomes polarized.

  1. Describe the events that lead to the generation of an action potential. 

  1. Describe how resting membrane potential, depolarization, and repolarization occur. 

    1. Describe the roles of Na+ and K+. 

  1. Describe the importance of threshold potential, hyperpolarization, and the all or none response in action potentials. 

  1. Describe how impulses are conducted along neurons. 

  1. Explain how information passes from one neuron to another. 

    1. Describe the roles of neurotransmitters and Ca2+. 

  1. Describe the classification of nerves into sensory, motor, and mixed.

  1. Describe the organization of the nervous system (central and peripheral, afferent and efferent, somatic and autonomic, parasympathetic and sympathetic). 

  1. Compare and contrast cranial nerves and spinal nerves. 

  1. Compare and contrast parasympathetic and sympathetic nervous system effects.