In which bones shall have Haversian system

Options

A. Panther
B. Python
C. Pigeon
D. Pipe Fish.

Answer

**Step-by-Step Solution:**

1. **Understanding the Haversian System**: The Haversian system, also known as the osteon, is a structural unit of compact bone. It consists of a central Haversian canal surrounded by concentric layers of bone matrix called lamellae. This system is crucial for the nourishment and communication of bone cells (osteocytes) through the blood vessels contained within the canals.

2. **Identifying the Characteristics**: The Haversian system is primarily found in mammals. It is a characteristic feature that distinguishes mammalian bones from those of other vertebrates. Other animals, such as reptiles and fish, do not possess this system in their bone structure.

3. **Analyzing the Given Options**: The question provides a list of animals to choose from. We need to identify which of these animals is a mammal, as the Haversian system is a typical feature of mammalian bones.

4. **Evaluating Each Option**:
- **Panther**: A mammal, thus it has the Haversian system.
- **Python**: A reptile, does not have the Haversian system.
- **Pigeon**: A bird, does not have the Haversian system.
- **Fish**: Generally, fish do not possess the Haversian system.

5. **Conclusion**: The only animal from the options that possesses the Haversian system is the panther.

**Final Answer**: The Haversian system is present in the bones of the panther.

---