alleryStart learning →Which plasma protein is the least abundant of the three major groups and is essential for clotting?
AAlpha globulin
BGamma globulin
CFibrinogen
DBeta globulin
Answer & Solution
Correct answer: C. Fibrinogen
1. The three major plasma protein groups rank as albumin, then globulins, then fibrinogen.
2. Fibrinogen is therefore the least abundant of the three.
3. It is produced by the liver and is the soluble precursor of the fibrin that forms a clot.
4. The globulins are all more abundant than fibrinogen, so none of them fits the description.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 18 "The Cardiovascular System: Blood", section 18.1 An Overview of Blood_
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