An embolism results from:

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Question: An embolism results from:

Option 1: a detached thrombus
This is the classic description of an embolism in many contexts. When a thrombus (blood clot) becomes detached from its site of formation and travels through the bloodstream, it can lodge in a distant vessel, causing an embolic occlusion. The mechanism involves fragmentation and mobilization of a clot and subsequent lodgment in narrower vessels, leading to ischemia downstream.

Option 2: a stenosis
Stenosis refers to narrowing of a vessel, which can contribute to altered flow or turbulence but does not by itself describe the formation of an embolus. Embolism requires movement of material through the circulation; stenosis is a fixed structural narrowing rather than a detached traveling fragment.

Option 3: an occlusion
An occlusion is the blockage of a vessel. While emboli can cause occlusions, the term embolism specifically denotes the event of a detached material traveling and causing blockage elsewhere. Occlusion can be the result of an embolism, but the wording "an occlusion" does not capture the origin of the embolus itself.

Option 4: edema
Edema is swelling due to fluid accumulation, typically not related to intravascular traveling fragments causing blockage. It reflects fluid imbalance or inflammation in tissues rather than thromboembolic events. Therefore, edema does not describe how an embolism forms or travels.

Overall, the concept hinges on the idea that material (often a detached thrombus) travels through the bloodstream and causes obstruction at a distant site, which aligns with the classic description of an embolism. The other options describe related vascular phenomena or consequences but do not define the embolic event itself.

hk_264_120258_248438 Chapter 8 Self Test: Circulatory (Cardio/vascular) System

An embolism results from:

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