In heart , there are conducting cardiac muscles which consist of fibres called

Options

A. Myonemes
B. Purkinje fibres
C. Telodendria
D. Columnae carneae.

Answer

To answer the question "In heart, there are conducting cardiac muscles which consist of fibers called," we need to identify the specific type of fibers that are involved in the conduction of impulses in the heart.

### Step-by-Step Solution:

1. **Understanding the Question**: The question is asking about the specific type of fibers found in the heart that are responsible for conducting electrical impulses.

2. **Identifying the Options**: The options provided include:
- A) Myonemes
- B) Purkinje fibers
- C) Telo dendria
- D) Column cornea

3. **Analyzing Option A - Myonemes**: Myonemes are contractile structures found in single-celled eukaryotes and do not play a role in the heart's conduction system. Therefore, this option is incorrect.

4. **Analyzing Option D - Column Cornea**: Column cornea is a structure found in the heart that helps in controlling the valves between the atria and ventricles. However, it does not conduct impulses. Thus, this option is also incorrect.

5. **Analyzing Option C - Telo Dendria**: Telo dendria are part of the neuron structure and are involved in transmitting impulses between neurons. They are not related to the heart's conduction system, so this option is incorrect.

6. **Analyzing Option B - Purkinje Fibers**: Purkinje fibers are specialized cardiac muscle fibers located in the heart. They are responsible for conducting electrical impulses from the atrioventricular (AV) node to the ventricles, facilitating coordinated heart contractions. This makes Purkinje fibers the correct answer.

7. **Conclusion**: The fibers in the heart that are responsible for conduction are called **Purkinje fibers**.

### Final Answer:
The conducting cardiac muscles in the heart consist of fibers called **Purkinje fibers**.