Operation of the Neuromuscular Junction

HideShow resource information

1. There are three types of muscle

  • Involuntary (smooth), cardiac, voluntary (striated/skeletal)
  • Voluntary, involuntary
  • Ca2+ binds to proteins in the muscle, which leads to contraction. Acetylcholine is recycled by acetylcholineesterase so that contraction only occurs when impulsed arrive continuously
1 of 20

Other questions in this quiz

2. What affect does parasympathetic stimulation have on the heart

  • It decreases heart rate
  • It increases heart rate

3. Step 5 (Operation of the Neuromuscular Junction)

  • T tubules channel the action potential into the cell, towards the sarcoplasmic reticulum, this organelle releases stored Ca2+ ions into cell cytoplasm in response to depolarisation
  • Ca2+ binds to proteins in the muscle, which leads to contraction. Acetylcholine is recycled by acetylcholineesterase so that contraction only occurs when impulsed arrive continuously

4. ______ muscle cells are said to be mononucleated

  • Cardiac and smooth muscle
  • Cardiac and voluntary
  • Voluntary muscle cells

5. All muscles produce a force on contraction because they contain filaments made of the proteins

  • Actin and myosin
  • Insulin
  • Cardiac

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »