BIOS 1030  Week 11 Van Brocklyn

  1. Name the two main components of the nervous system. What is included in each of these components?
  1. The peripheral nervous system in divided into two divisions. What are these divisions?
  1. The autonomic division is also divided into two more divisions. What are these divisions?
  1. Draw a picture of a neuron. Label the axon terminals, axon, axon hillock, cell body, and dendrites.
  1. ______neurons sends inputs to the ______neurons, where then a ______neuron carries the output to the muscle and organs.
  1. Describe what happens at a sodium potassium pump.
  1. What is the resting membrane potential? What is it in a typical cell?
  1. Action potential:
  1. How does an action potential get started?
  1. How does the axon hillock help an action potential?
  2. Why is an action potential all or nothing?
  1. Why are axons insulated?
  1. What does it mean that a neuron has saltatory conduction?
  1. Define: nodes of Ranvier. Draw them on your picture in question #4.
  1. Myelin sheath are made by ______.
  1. What do you think would happen if a cell did not have any myelin sheath?
  1. What is neurotransmission? What is a synapse?
  1. Describe the steps of neurotransmission and how it changes membrane potential?
  1. Define: convergence and divergence.

BIOS 1030  Week 11 Colvin

  1. What is the difference between resting membrane potential, graded potentials, and an action potential?
  1. Describe what summation is.
  1. During an action potential, there is depolarization and repolarization. what happens to the ions during this process?
  1. Describe the all-or-none principle.
  1. What does it mean when they say an action potential is self-propagating?
  1. What encodes the strength of a stimulus?
  1. What controls the speed of action potentials?
  1. What are the function of neuroglial cells? What are the different types of neuroglial cells?
  2. What is a myelin sheath?
  1. ______form myelin sheath in CNS; ______forms myelin sheaths in PNS.
  1. Describe salutatory conduction.
  1. Name and describe some disorder that are associated with degeneration of myelin sheaths.
  1. What is synaptic transmission?
  1. Now, describe the process of synaptic transmission.
  1. What is the difference between excitatory and inhibitory NTs?