Questions: 1- 181. T Tubules are extensions of
the _____ in skeletal muscle?2. CN III innervates with of
the following muscle?3. The brain and spinal cord
are part of the ______ nervous system?4. A wheelbarrow is an example
of a _______ class lever?5. The muscle contraction
pulling on its insertion point, corresponds to what part of the lever system?6. A synovial joint
corresponds to what part of the lever stem?7. &nbs..