Study Question Twelve

• What is the order of events that lead up to a muscular contraction at a neuromuscular junction?

  The axon of the somatic motor neuron carries the action potential, as the axon branches off into telodendria which end at synaptic bulbs.
• What is the order of events that lead up to a muscular contraction at a neuromuscular junction?

  The action potential will open up calcium channels from the sarcoplasmic reticulum, and so the released calcium will allow vesicles to travel through the neurolemma.
• What is the order of events that lead up to a muscular contraction at a neuromuscular junction?

  From those vesicles, acetylcholine will be released into the synaptic cleft and diffuse, binding acetylcholine to nicotinic acetylcholine receptors.
• What is the order of events that lead up to a muscular contraction at a neuromuscular junction?

  The receptors then activate, causing sodium to enter the cell and excite it.
• The axon of the somatic motor neuron carries the action potential, as the axon branches off into telodendria which end at synaptic bulbs. The action potential will open up calcium channels from the sarcoplasmic reticulum, and so the released calcium will allow vesicles to travel through the neurolemma. From those vesicles, acetylcholine will be released into the synaptic cleft and diffuse, binding acetylcholine to nicotinic acetylcholine receptors. The receptors then activate, causing sodium to enter the cell and excite it.