High school biology website with flash animations. Requires current Flash player.
 
Have-a-Java Quiz 6 - Nervous System (Part I):
 
1. The central conducting pathway of a neuron is the:
    A) dendrite
    B) axon
    C) synapse
    D) Node of Ranvier

 
2. Nerve impulses travelling down a neuron must be conveyed across a tiny gap called a ________ to reach the next neuron.
    A) dendrite
    B) axon
    C) synapse
    D) Node of Ranvier

 
3. Neurons at "rest" are primarily permeable to:
    A) K+
    B) Na+
    C) Cl-
    D) F-

 
4. The "Resting Membrane Potential" of most neurons falls between:
    A) +65 mV to + 100 mV
    B) +10 mV to +20 mV
    C) -150 mV to -175 mV
    D) -60 mV to -90 mV

 
5. The upstroke of an "Action Potential" is primarily caused by opening of:
    A) leak channels for Na+
    B) voltage-gated Na+ channels
    C) leak channels for K+
    D) voltage-gated K+ channels

 
6. The downstroke of an "Action Potential" is primarily caused by opening of:
    A) leak channels for Na+
    B) voltage-gated Na+ channels
    C) leak channels for K+
    D) voltage-gated K+ channels



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