What is an example of intravascular resistance to fluid distribution?

Embolism is an example of intravascular resistance to fluid distribution because it refers to the obstruction of a blood vessel by a foreign object, such as a blood clot, air bubble, or fat globule that has traveled from another part of the body. When an embolism occurs, it can significantly impede blood flow through the affected vessel, thereby increasing resistance and disrupting the normal distribution of fluids within the vascular system. This blockage can lead to inadequate perfusion of tissues downstream of the obstruction, resulting in various complications.

In contrast, thrombosis involves the formation of a clot within a blood vessel that can restrict flow but is considered more related to the body's response to injury and vessel integrity rather than an obstruction introduced from another site in the body. Hemorrhage refers to bleeding and does not directly pertain to resistance within the vascular system in the sense of obstructing flow. Varicosity involves the abnormal dilation of veins but primarily affects venous return rather than causing resistance within the vessels to the distribution of fluid.