Question

Discuss the role of calcium ions in the transmission of an action potential at the synapse

Discuss the role of calcium ions in the transmission of an action potential at the synapse

Homework Answers

Answer #1

Ans:-

Calcium Ion plays a important role in synaptic of action potential. Once action potential reach thea of nerve it opens voltage sensitive Calcium channel which causes influx of calcium into the nerve terminal. This calcium bind to synaptic vesicles which contain neurotransmitter and cause it's exocytosis bi activation of SNARE protein which help in synaptic vesicle exocytosis and released off neurotransmitter into the synaptic cleft. Once this neurotransmitter is released into the synaptic cleft IT bind with hormonal receptors present in postsynaptic membrane and brings about action potential in next neurone.

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Compare and Contrast the Neuronal Action Potential vs Cardiac Action Potential. Focus on THE STEPS of...
Compare and Contrast the Neuronal Action Potential vs Cardiac Action Potential. Focus on THE STEPS of the both action potentials and identify the difference(s). What is the significance and involvement of Calcium ions in the cardiac action potentials? Why are Calcium ions not necessary in the neuronal action potentials, but are essential in the myocardial AP?
Which action would shift this reaction away from solid calcium fluoride and toward the dissolved ions?...
Which action would shift this reaction away from solid calcium fluoride and toward the dissolved ions? adding calcium ions adding fluoride ions removing fluoride ions removing calcium fluoride
Order the following events that occur in the synapse from 1-7 1. Ion channels close 2....
Order the following events that occur in the synapse from 1-7 1. Ion channels close 2. Neurotransmitters are taken back up out of the synapse or degraded by enzymes in the cleft 3. Ion channels open to stimulate the action potential in the next neuron 4. Signal arrives at the synaptic terminals 5. Influx of Calcium ions 6. Synaptic vesicles fuse to the membrane and release neurotransmitters into the synapse 7. Neurotransmitters bind to ion channels on the dendrites on...
. Draw a cardiac action potential and indicate on the graph the channels and ions responsible...
. Draw a cardiac action potential and indicate on the graph the channels and ions responsible for each phase of the cardiac action potential and whether these ions are moving into (influx) cardiac contractile cells or out (efflux) of cardiac contractile cells.
At resting potential, the equilibrium voltage is maintained in part by chloride ions and other anions...
At resting potential, the equilibrium voltage is maintained in part by chloride ions and other anions inside the cell and by the action of the _____ - ______ pump. Because of the action of the pump, there is a higher concentration of _________ions inside the cell and a higher concentration of ___________ions outside the cell. A small depolarization of the cell results in rapid opening of voltage-gated _______ channels while the voltage-gated __________channels stay closed. ________ flows into the axon,...
Describe the process of generation of action potential in the heart. Include ions involved.
Describe the process of generation of action potential in the heart. Include ions involved.
1.    During an action potential, Na+ ions move into the cell at a rate of...
1.    During an action potential, Na+ ions move into the cell at a rate of about 3
-The long plateau phase of the cardiac muscle action potential is due to increased membrane permeability...
-The long plateau phase of the cardiac muscle action potential is due to increased membrane permeability to potassium ion. increased membrane permeability to sodium ions. movement of fewer sodium ions across the cell membrane. decrease in the amount of calcium diffusing across the membrane. calcium channels remaining open.
Describe how an action potential in a motor neuron results in actin-myosin muscle contraction. Includ the...
Describe how an action potential in a motor neuron results in actin-myosin muscle contraction. Includ the role of acetylcholine, acetylcholine receptor, calcium, sarcolemmal action potential, T tubules, and troponin.
ORDERING: 1. Number these in the proper sequence as they occur through a full action potential...
ORDERING: 1. Number these in the proper sequence as they occur through a full action potential cycle beginning with the cell at -70mV. ___ action potential ___ depolarization ___ hyperpolarization ___ threshold ___ resting potential ___ polarization 2. Number these in the proper sequence as they occur through a full long-term potentiation cycle beginning with the next thing that would occur after the neurotransmitter has been released into the synapse. (6 points) ___ calcium activates second messenger pathways ___ cell...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT