Which important white blood cells travel throughout the bloodstream seeking out bacteria?.

Choice A rationale:

Vasodilation increases the diameter of blood vessels, which decreases resistance and thus decreases pressure. However, the increased diameter allows for increased blood flow, not decreased.

Choice B rationale:

Vasodilation decreases pressure due to the increased diameter of the blood vessels, and it increases flow because of the reduced resistance to blood flow.

Choice C rationale:

Vasodilation does not increase pressure; it decreases it.

Choice D rationale:

While vasodilation decreases pressure, it does not decrease flow; it increases it.

Choice A rationale:

Inhaled food or foreign objects are most likely to lodge in the right bronchus because it is wider and more vertical than the left.

Choice B rationale:

While it is possible for objects to lodge in the left bronchus, it is less common due to its narrower and less vertical structure.

Choice C rationale:

Bronchioles are smaller structures within the respiratory system where foreign objects are less likely to lodge.

Choice D rationale:

The pharynx is not the most common location for inhaled food or foreign objects to lodge.