Which Is Not a Function of the Blood-Brain Barrier

question 30

Multiple Choice

Which is not a function of the blood-brain barrier?

• A)It prevents nicotine and alcohol from entering brain interstitial fluid.
• B)It prevents brain neurons from being exposed to drugs.
• C)It prevents brain neurons from being exposed to waste products in the blood.
• D)It protects brain neurons from exposure to abnormal hormone levels.
• E)It protects brain neurons from exposure to abnormal ion levels.

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Definitions:

Feature Detectors

Feature detectors are specialized brain cells that identify specific elements in the visual field, like shapes, angles, or movements.

Fovea

A small depression in the retina of the eye where visual acuity is highest due to a high concentration of cones.

Bipolar Cells

Cells located in the retina that function as intermediaries between photoreceptors and ganglion cells, playing a crucial role in visual processing.

Cones

Photoreceptor cells in the retina of the eye that function best in relatively bright light and enable the perception of color and fine detail.