The following involves Ions during action potentials.
A. True or false: After an action potential the concentration gradient of sodium is significantly reduced
B. If the membrane potential is depolarized to -10mV which direction will potassium ions flow through voltage gated potassium channels? a. Into the neuron b. Out of the neuron c. No net movement d. Cannot be determined from the information given
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3. Which of the following is TRUE about a motor neuron?
| It passes information to another motor neuron. | ||
| It passes information to another neuron. | ||
| It stimulates cells associated with muscles or glands. | ||
| It cannot generate an action potential. |
2. Choose the immediate event that needs to occur for a nerve to fire an action potential.
| Voltage-gated potassium ion channels need to open. | ||
| A threshold potential will need to be reached. | ||
| Depolarization will need to be happen. | ||
| Voltage-gated sodium ion channels need to close. |
1. Choose the TRUE statement with respect to axons and/or dendrites.
| Dendrite is the location that a neurotransmitter moves into the synamptic cleft. | ||
| Action potentials travel along the axon of a neuron. | ||
| A neuron will typically have more axons than dendrites. | ||
| More than one is correct |
