Briefly Describe the Structure of the Blood-Brain Barrier and Why

question 33

Essay

Briefly describe the structure of the blood-brain barrier and why it is important.

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Definitions:

Amplitude

Amplitude refers to the maximum extent of a vibration or oscillation, measured from the position of equilibrium.

Weber's Law

A principle stating that the change in a stimulus that will be just noticeable is a constant ratio of the original stimulus.

Just Noticeable Difference

The minimal change in a stimulus that can just barely be detected by an organism.

Absolute Threshold

The lowest level of stimulation that a person can consciously detect 50 percent of the time the stimulation is present.