Which Structures Create the Blood Brain Barrier (BBB)

question 35

Multiple Choice

Which structures create the blood brain barrier (BBB) ?

• A) Gap junctions between endothelial cells that form the capillary walls
• B) Tight junctions between endothelial cells that form the capillary walls
• C) Gap and tight junctions between astrocytes and endothelial cells that form the capillary walls
• D) Desmosomes and tight junctions between astrocytes and ependymal cells that form the capillary walls
• E) Gap junctions between ependymal cells and endothelial cells that form the capillary walls

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Definitions:

Dependent Variable

In an experiment or clinical trial, the variable that represents the effect or outcome of interest.

Physical Age

A measure of how old a person is in years, as opposed to biological or psychological age, which may differ based on health or mental state.

Physical Health

The overall condition of the body, including the absence of disease, fitness level, and physical functioning.

Negative Correlation

A relationship between two variables in which an increase in one variable is associated with a decrease in the other.