1 In a freak nail gun accident, a construction worker is impaled by a nail through the frontal lobe of his brain. The nail is surgically removed and some tissue damage occurs. Which neuroglia would be mobilized in repsonse to this accident? Select all that apply. A : ependymal cell B : microglia C : Schwann cells D : astrocytes E : oligodendrocytes 2

In the retina, visual signals pass from

A :

photoreceptors to ganglion cells to bipolar cells

B :

photoreceptors to bipolar cells to ganglion cells

C :

bipolar cells to photoreceptors to ganglion cells

D :

ganglion cells to photoreceptors to bipolar cells

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If you were asked to develop a drug that blocked the action of the somatic nervous system and therefore relax muscles, where would you look to target that drug?

A :

The neuromuscular junction, because there exists so many accessible targets that could be blocked.

B :

None of the choices is correct.

C :

At the level of CNS control of somatic motor neurons, because the only place that all activity can be blocked is centrally.

D :

Voltage gated sodium channels, because these are the only way to specifically target the somatic nervous system.