A Spinal Nerve Contains

question 5

Multiple Choice

A spinal nerve contains

• A) axons of sensory neurons only.
• B) myelinated axons only.
• C) axons of motor neurons only.
• D) dendrites only.
• E) both sensory and motor axons.

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Definitions:

Rods

Photoreceptor cells in the retina of the eye that are highly sensitive to low levels of light and are primarily responsible for night vision.

Fovea

A tiny pit located in the macula of the retina that provides the clearest vision of all by having a high concentration of cones and no rods.

Color Vision

The ability of the visual system to distinguish objects based on the wavelengths of the light they reflect or emit.

Dark Adaptation

The method through which eyes enhance their ability to perceive dimly lit environments.