Reference no: EM133453724

Questions

1. Activation of cells within the ________ by a poison in the blood would be predicted to produce ________.

area postrema; vomiting

nucleus accumbens; visual hallucinations

hippocampus; locomotion

hypothalamus; vomiting

nucleus accumbens; nausea

2. EPSP's that do not cause the cell to reach threshold, will never cause neurotransmitter release.

True

False

3. At the threshold of activation (aka critical firing level), which ion has stronger net pressure (combined effects of the forces of EP and Diffusion) acting upon it?

Na+

K-

Na-

Cl+

K+

4. The resting membrane potential of neurons is _______________ and the critical firing level (threshold of excitation) is __________________.

-70mv; -60mv

-60mv; -70mv

0mv; -60mv

70mv; 60mv

60mv; 70 mv

5. Synaptic vesicles hold with in them

neurotransmitters

ions

microtubules

Golgi

None of these are correct

6. If you block reuptake, you would expect MORE neurotransmitter to be in the synaptic cleft.

True

False

7. Stimulation of Ionotropic receptors has fast acting AND long term effects on a neuron.

True

False

8. The threshold of activation is where it is because that is the voltage at which K+ channels are programmed to open.

True

False

9. We used the term "voltage gated" in this unit. What does this refer to?

Refers to the opening and closing of ion channels involved in conducting the action potential

Refers to the sodium and potassium pump doing voltage gating

Refers to the force of diffusion acting on ions in and around the axon.

none of these are correct

all of these are correct