Question:medium
Complement components formed in the liver are?
Complement components formed in the liver are?
Show Hint
The liver is the chief source of the central complement protein C3 and its partners.
Updated On: Jun 24, 2026
- C2, C4
- C3, C6, C9
- C5, C8
- C1
Show Solution
The Correct Option is B
Solution and Explanation
Step 1: Complement is not all made in one place. Different organs and cells churn out different components, and here we must pick the trio attributed to the liver.
Step 2: Hepatocytes are the body's main complement factory, and the classic teaching list assigns C3, C6 and C9 to the liver. C3 alone is a huge contributor since it sits at the hub of all three activation pathways. That makes option b the right choice.
Step 3: The other options belong elsewhere in the standard site list. Macrophages handle C2 and C4, the spleen is linked to C5 and C8, and the intestine is the source of C1. None of those is the hepatic set.
Step 4: Matching the liver to its dedicated components gives the trio.
\[\boxed{\text{C3, C6, C9}}\]
Step 2: Hepatocytes are the body's main complement factory, and the classic teaching list assigns C3, C6 and C9 to the liver. C3 alone is a huge contributor since it sits at the hub of all three activation pathways. That makes option b the right choice.
Step 3: The other options belong elsewhere in the standard site list. Macrophages handle C2 and C4, the spleen is linked to C5 and C8, and the intestine is the source of C1. None of those is the hepatic set.
Step 4: Matching the liver to its dedicated components gives the trio.
\[\boxed{\text{C3, C6, C9}}\]
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