Which of the Following Is True of Photoreceptors in the Light

question 181

Multiple Choice

Which of the following is true of photoreceptors in the light (relative to the dark) ?

• A)cGMP levels are elevated.
• B)Phosphodiesterase is more active.
• C)Sodium channels are open.
• D)The synaptic terminal is releasing more transmitter.
• E)The photoreceptors are depolarized.

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Definitions:

Mechanistic Explanation

An explanation of phenomena in terms of the system's physical or mechanical parts and how they interact.

Dendrites

The branched projections of a neuron that receive electrochemical stimulation from other neural cells.

Axon

A thin, extended part of a neuron, also known as a nerve cell, that often transmits electrical impulses away from the cell's central body.

Glia Cells

Non-neuronal cells in the central nervous system that support, protect, and nourish neurons, playing a crucial role in maintaining homeostasis and forming myelin.