Headaches, Stomachaches, and Poor Sleep Patterns Could All Be Symptoms

question 9

Multiple Choice

Headaches, stomachaches, and poor sleep patterns could all be symptoms related to which of the following?

• A) psychoneuroimmunology
• B) stress
• C) diabetes
• D) PTSD

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Definitions:

Rods

Photoreceptor cells in the retina that are sensitive to low light levels and provide black-and-white vision.

Optic Nerve

The nerve that transmits visual information from the retina to the brain.

Fovea

A small depression in the retina of the eye where visual acuity is highest, due to the high density of cones, responsible for sharp central vision.

Color Vision

The ability of the visual system to distinguish different wavelengths of light, allowing for the perception of various colors.