Which of the following is last part of the oviduct which has narrow lumen and joins with the uterus ?

Options

A. Ampulla
B. Isthmus
C. Infundibulum
D. Fimbriae

Answer

To answer the question, "Which of the following is the last part of the oviduct which has a narrow lumen and joins with the uterus?", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Oviduct**:
- The oviduct, also known as the fallopian tube, consists of several parts. It's important to know the sequence of these parts to identify the last one.

2. **Identify the Parts of the Oviduct**:
- The oviduct has four main sections:
- **Fimbriae**: These are the finger-like projections that help in collecting the ovum from the ovary.
- **Infundibulum**: This is the funnel-shaped part of the oviduct that is closest to the ovary.
- **Ampulla**: This is the longest and widest part of the oviduct.
- **Isthmus**: This is the narrowest part of the oviduct, which connects to the uterus.

3. **Determine the Last Part**:
- The question specifically asks for the last part of the oviduct that has a narrow lumen and connects to the uterus.
- Among the identified parts, the **Isthmus** is the last part of the oviduct that fits this description.

4. **Conclusion**:
- Therefore, the correct answer to the question is the **Isthmus** of the oviduct.

### Final Answer:
The last part of the oviduct which has a narrow lumen and joins with the uterus is the **Isthmus**.

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