In which type(s) of muscle cells does each cell have its own neuromuscular junction? skeletal only unitary smooth and skeletal skeletal and cardiac
- In which type(s) of muscle cells does each cell have its own neuromuscular junction?
skeletal only
unitary smooth and skeletal
skeletal and cardiac
2. The follow is NOT true of CARDIAC muscle fibers:
- connected by gap junctions
- include pacemaker cells that can produce produce action potentials at regular intervals without innervation
- without calcium cross bridge cycles will not occur and fibers will not shorten
- each cell in a motor unit has a neuromuscular junction with the same motor neuron
actin and myosin filaments are arranged in sarcomeres
produce greater force when stretched than at resting length
3. Match the following:
-Skeletal muscle
-Cardiac muscle
-Smooth muscle
- Can maintain prolonged isometric contractions with very little energy
- Striated muscle fibers with gap junctions between cells
- Includes fibers specialized for anaerobic respiration as well as those specialized for aerobic respiration
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