Movement Quiz 1

9-9-09

I pledge on my honor that I neither gave nor received assistance in completing or grading this quiz .

1. Which is not one of the fundamental questions for motor control?

    a.           How do we control our movements?

    b.          How do we maintain stability?

    c.           How does perception guide action?

    d.          How does digestion work?

2. The part of a neuron that receives signals from other neurons is called the

    a.           Myelin sheath

    b.          Axon

    c.           Dendrite

    d.          Nucleus

3. Muscles contract through the action of

    a.           Tiny little pneumatic pumps

    b.          Actin & myosin

    c.           Cyclic AMP & dopamine

    d.          GABA & calcium

4. The serial order problem is about

    a.           how we overcome the problem of coarticulation

    b.          how we produce rapid sequences of movements

    c.           how we learn new skills

    d.          how we decide what to have for breakfast

5. Group Ia inhibitory interneurons coordinate ___.

    a.           coarticulation                          

    b.          post-synaptic neurons

    c.           muscle inflation

    d.          opposing muscles

6. An excitatory neurotransmitter like glutamate will

    a.           Depolarize the post-synaptic neuron

    b.          Increase the chance that the post-synaptic neuron will discharge an action potential

    c.           Open channels in the membrane of the post-synaptic neuron

    d.          All of the above

7. Golgi tendon organs are part of the _____ system.

    a.           Skeletal

    b.          Proprioception

    c.           Rigatoni

    d.          Integumental

8. Ions flowing through channels in a nerve cell membrane are influenced by

    a.           electrical gradient

    b.           concentration gradient

    c.           both of the above

    d.           neither of the above

9. An inhibitory neurotransmitter like GABA will

    a.           Hyperpolarize the postsynaptic neuron

    b.          Decrease the chance that the post-synaptic neuron will discharge an action potential

    c.           Open channels in the membrane of the post-synaptic neuron

    d.           All of the above

10.    The basic mechanism of muscle contraction is

    a.           Reduced protein fiber length  

    b.          Inflation

    c.           Sliding protein fibers

    d.          Antagonistic contraction