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

Options

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

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the specific type of fibers found in the conducting cardiac muscles of the heart.

2. **Analyzing the Options**:
- **Option 1: Myonemes**: These are contractile structures found in unicellular organisms, not in the heart. Therefore, this option is incorrect.
- **Option 2: Purkinje Fibers**: These fibers are part of the heart's conduction system. They arise from the atrioventricular (AV) node and form a network that helps synchronize the contraction of the ventricles. This option is likely correct.
- **Option 3: Talodendria**: These are branches of axons in neurons, not related to cardiac muscle. Hence, this option is incorrect.
- **Option 4: Columnar**: This term refers to a type of muscle structure involved in the heart valves, but it does not pertain to the conducting fibers. Thus, this option is also incorrect.

3. **Identifying the Correct Answer**: Based on the analysis, the correct answer is **Purkinje Fibers**. They are specialized conducting fibers in the heart that ensure synchronized contraction of the ventricles and help maintain the heart rhythm.

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

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