Question

in no less than 3-5 full ser and falling) of a neuron Include the charges of the area inside and outside the membrane how the tec desbe the action potential Clhoth rsinag sodium and potassium ion channels contribue action to the charges 15 pts moves downthe tporting event to describe how the action 16. Describe how the signal saltatory conductioins s ranmitted down the length of an axon through signal is transmitted down the length of an axon through tra 17. Describe the series of events represented in nu mbers 1, 2 and 3. s pts Axon Synaptic vesicle containing neurotransmitter Synaptic Cleft Postsynaptic membrane Presynaptic membrane 3 Ca 2 Voltage-gated Ligand-gated Ca? channel. . ion channels xplain how the myelin sheath increases the speed of the signal traveling wn a neuron. ts

Answer 1

15.

• Resting membrane potential at - 70mV.
• Rising phase starts  
• Depolarisation begins
• Voltage gated sodium channels opens
• Increased sodium permeability
• Membrane potential reaches +30mV.
• Depolarisation occurs
• Sodium channels closes and potassium channel opens
• Potassium ions moves until resting potential reaches
• Falling phase where repolarization occurs.

16.

Action potential transfers through the axon to the down when there is a change in the Polarity across the membranes of axons. So that there will be sodium and potassium exchange occurs and action potential is transferred.

17.

1. Action potential reaches axon (pre synaptic cleft).
2. Voltage gated calcium channels opens and calcium moves in
3. Calcium influx triggers that synaptic vesicles to release neurotransmitter.