Place the steps of the muscle action potential in the appropriate order.Rank the options below.An action potential arrives at the presynaptic terminal.An action potential arrives at the presynaptic terminal. open choices for rankingCalcium ions enter the presynaptic terminal.Calcium ions enter the presynaptic terminal. open choices for rankingACh binds to and opens ligand-gated Na+ channels on the postsynaptic membrane.ACh binds to and opens ligand-gated Na+ channels on the postsynaptic membrane. open choices for rankingVoltage-gated Ca2+ channels in the presynaptic membrane open.Voltage-gated Ca2+ channels in the presynaptic membrane open. open choices for rankingNa+ enters the postsynaptic cell.Na+ enters the postsynaptic cell. open choices for rankingThe enzyme acetylcholinesterase removes acetylcholine from the synaptic cleft.The enzyme acetylcholinesterase removes acetylcholine from the synaptic cleft. open choices for rankingThe neurotransmitter acetylcholine (ACh) is released from pre-synaptic vesicles.The neurotransmitter acetylcholine (ACh) is released from pre-synaptic vesicles. open choices for rankingACh unbinds from the ligand-gated Na+ channels, which then close.ACh unbinds from the ligand-gated Na+ channels, which then close. open choices for rankingPostsynaptic membrane begins to depolarize.Postsynaptic membrane begins to depolarize. open choices for rankingACh is released and diffuses into the synaptic cleft.ACh is released and diffuses into the synaptic cleft. open choices for rankingIf depolarization passes threshold, an action potential is generated along the postsynaptic membrane.If depolarization passes threshold, an action potential is generated along the postsynaptic membrane. open choices for ranking
Question
Place the steps of the muscle action potential in the appropriate order.Rank the options below.An action potential arrives at the presynaptic terminal.An action potential arrives at the presynaptic terminal. open choices for rankingCalcium ions enter the presynaptic terminal.Calcium ions enter the presynaptic terminal. open choices for rankingACh binds to and opens ligand-gated Na+ channels on the postsynaptic membrane.ACh binds to and opens ligand-gated Na+ channels on the postsynaptic membrane. open choices for rankingVoltage-gated Ca2+ channels in the presynaptic membrane open.Voltage-gated Ca2+ channels in the presynaptic membrane open. open choices for rankingNa+ enters the postsynaptic cell.Na+ enters the postsynaptic cell. open choices for rankingThe enzyme acetylcholinesterase removes acetylcholine from the synaptic cleft.The enzyme acetylcholinesterase removes acetylcholine from the synaptic cleft. open choices for rankingThe neurotransmitter acetylcholine (ACh) is released from pre-synaptic vesicles.The neurotransmitter acetylcholine (ACh) is released from pre-synaptic vesicles. open choices for rankingACh unbinds from the ligand-gated Na+ channels, which then close.ACh unbinds from the ligand-gated Na+ channels, which then close. open choices for rankingPostsynaptic membrane begins to depolarize.Postsynaptic membrane begins to depolarize. open choices for rankingACh is released and diffuses into the synaptic cleft.ACh is released and diffuses into the synaptic cleft. open choices for rankingIf depolarization passes threshold, an action potential is generated along the postsynaptic membrane.If depolarization passes threshold, an action potential is generated along the postsynaptic membrane. open choices for ranking
Solution
- An action potential arrives at the presynaptic terminal.
- Voltage-gated Ca2+ channels in the presynaptic membrane open.
- Calcium ions enter the presynaptic terminal.
- The neurotransmitter acetylcholine (ACh) is released from pre-synaptic vesicles.
- ACh is released and diffuses into the synaptic cleft.
- ACh binds to and opens ligand-gated Na+ channels on the postsynaptic membrane.
- Na+ enters the postsynaptic cell.
- Postsynaptic membrane begins to depolarize.
- If depolarization passes threshold, an action potential is generated along the postsynaptic membrane.
- ACh unbinds from the ligand-gated Na+ channels, which then close.
- The enzyme acetylcholinesterase removes acetylcholine from the synaptic cleft.
Similar Questions
An action potential arriving at the presynaptic terminal causesMultiple Choicevoltage-gated sodium ion channels to open, and sodium ions to diffuse out of the cell.voltage-gated calcium ion channels to open, and calcium ions to diffuse into the cell.voltage-gated sodium ion channels to open, and sodium ions to diffuse into the cell.ligand-gated sodium channels to open, and sodium ions to diffuse out of the cell.acetylcholine to diffuse into the cell.
In response to an action potential, voltage-gated calcium channels Blank______ in the presynaptic cell's axon terminal.Multiple choice question.closeopen
Place the following events in excitatory synaptic transmission in order: 1 - A postsynaptic potential is produced. 2 - Voltage-gated calcium channels open and calcium enters the cell. 3 - ACh is released and diffuses across the axon terminal. 4 - A nerve signal arrives at an axon terminal. 5 - Ligand-gated sodium channels open and sodium enters the cell.
Action potentials arriving at a presynaptic terminal causeMultiple Choicerelease of neurotransmitter.calcium ion channels to close.calcium ion channels to open.breakdown of acetylcholine.
Each presynaptic terminal contains _________blank, which contain the neurotransmitter _________blank that, when released, cause ligand-gated Na+ channels to open in the motor end-plate. This causes _________blank in the muscle cell.Multiple Choicesynaptic vesicles; acetylcholine; depolarizationproteins; acetylcholine; repolarizationmitochondria; acetylcholinesterase; depolarizationACh receptors; acetylcholinesterase; repolarization
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