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Physio
assignment 1-6
| Question | Answer |
|---|---|
| During a relative refractory period: | the action potential can be initiated with a strong stimulus. |
| The only ions that can diffuse across a neurons membrane when the neuron is at rest is: | Potassium |
| A Synapse consists of | A synaptic knob, a synaptic cleft and the plasma membrane of a postsynaptic neuron |
| Serotonin is an example of an: | Amine neurotransmitter. |
| The first event to occur when an adequate stimulus is applied to a neuron is: | Some of the sodium channels at the point of stimulation open. |
| When an impulse reaches a synapse: | Chemical transmitters are released. |
| Severe depression can be cause by a deficit in certain brain synapse of: | Amines |
| What is true of an action potential? | The outside of the plasma membrane is negatively charged and the inside is positively charged. |
| Which is true of a neuron with a resting potential? | The sodium pump has moved NA+ to the outside of the plasma membrane. |
| Dopamine, epinephrine, and norepinephrine are classified as: | Catecholamines |