Examlex
A very anxious person appears in the ER.He has a heart rate of 160 beats/min and indicates that he has a history of panic attacks.He is prescribed an antianxiety agent and a drug to slow his heart rate.Identify the drug (to slow heart rate) .
Retinaldehydes
A form of vitamin A that serves as a precursor to retinoic acid, used in skincare for its anti-aging properties.
Trichromatic Theory
A theory in color vision proposing that the human eye has three types of receptors with differing sensitivities to different light wavelengths, corresponding to red, green, and blue.
Color Vision
The capacity of the visual system to identify objects by the wavelengths of light they reflect, emit, or transmit.
Cones
Photoreceptor cells in the retina of the eye that function in bright light and enable the perception of color and fine detail.
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