4 Written Questions

1. contractile protein in the thin fillaments of skeletal muscle cells
2. contractile protein in the thick filaments of skeletal muscle cells
3. the end of a muscle that is attached to a relatively immoveable part
4. a muscle that assists a prime mover but is not capable of producing the movement by itself

4 Multiple Choice Questions

1. muscle fiber contracts, it all contracts, if none of it contracts none contracts
   1. all or none
   2. motor unit
   3. insertion
   4. origin
2. where the nerve and the muscle meet
   1. motor unit
   2. neuromuscular junction
   3. neurotransmitter
   4. insertion
3. the muscle that is mainly responsible for a particular body movement; also called agonist
   1. sarcomere
   2. prime mover
   3. all or none
   4. origin
4. a functional contractile unit in a skeletal muscle fiber
   1. origin
   2. synergist
   3. sarcomere
   4. actin

4 True/False Questions

1. motor unit → a single neuron and all the muscle fibers it stimulates

   True        False

2. neurotransmitter → a chemical substance that is released at the axon terminals to stimulate a muscle fiber contraction or a pulse in another neuron

   True        False

3. insertion → the end of a muscle thats attached to a relatively moveable part

   True        False

4. antagonist → a muscle that assists a prime mover but is not capable of producing the movement by itself

   True        False