The common bile duct in human is formed by the joining of

Options

A. pancreatic duct and bile duct
B. cystic duct and hepatic duct
C. cystic duct and pancreatic duct
D. hepatic duct and pancreatic duct.

Explanation

To solve the question regarding the formation of the common bile duct in humans, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Components**: The common bile duct is a crucial structure in the digestive system. It is important to identify the ducts involved in its formation. The key ducts to consider are the hepatic duct (which comes from the liver) and the cystic duct (which comes from the gallbladder).

2. **Identify the Ducts**:
- The **hepatic duct** is formed by the convergence of the right and left hepatic ducts, which transport bile from the liver.
- The **cystic duct** connects the gallbladder to the common bile duct and carries bile that is stored in the gallbladder.

3. **Formation of the Common Bile Duct**: The common bile duct is formed by the joining of the:
- **Cystic duct** (from the gallbladder)
- **Common hepatic duct** (from the liver)

4. **Conclusion**: Therefore, the common bile duct is formed by the combination of the cystic duct and the common hepatic duct.

5. **Select the Correct Option**: Based on the information gathered, the correct answer to the question is:
- **Option B**: Cystic duct and hepatic duct.

### Final Answer:
The common bile duct in humans is formed by the joining of the cystic duct and the hepatic duct (Option B).

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