As pressure increases on the nerves, the blood flow decreases.

Since the jets in venturi masks generally limit oxygen flow at 12 to 15 liters per minute the total flow decreases as the ratio decreases.

During times of extremely high flow, the bars may become covered; only to resurface when the flow decreases.

As we get closer to the sink, area of flow decreases.

Lactate accumulates but, paradoxically, cerebral blood flow decreases, which leads to a proposed energy crisis.