A(n) ____________ is a blood clot that is dislodged from its point of formation.

Question

BlackTom AI · Accepted Answer

To begin, let’s restate the problem in plain terms: identify the term for a blood clot that has broken loose from where it formed and is now moving through the bloodstream.
Option 1: Bolus. A bolus refers to a small, concentrated dose of a medication given rapidly, or a lump of semisolid material administered in the gut. It does not describe a dislodged clot traveling in the circulation, so this choice is incorrect.
Option 2: Embolus. An embolus is precisely a blood clot or other substance that has detached from its original site and travels through the bloodstream. This matches the definition in the question, making it the correct concept here.
Option 3: Aneurysm. An aneurysm is an abnormal bulge or dilation of a blood vessel, usually due to weakness in the vessel wall. It does not describe a clotted piece that has migrated, so this option is not fitting.
Option 4: Thrombus. A thrombus is a clot that forms in place at the site of injury within a blood vessel. Since it remains at its origin rather than traveling, this choice does not answer the question about a dislodged clot.
In summary, the key distinction is between a clot that forms and stays put (thrombus) versus a clot that breaks free and travels (embolus). The other terms describe different concepts entirely (bolus as a dosing unit, aneurysm as vessel dilation), so they do not fit the description given.

A(n) ____________ is a blood clot that is dislodged from its point of formation.单项选择题

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