The muscular tissue which function throughout the life continuously without fatigue is

Options

A. skeletal muscle
B. cardiac muscle
C. smooth muscle
D. voluntary muscle

Explanation

**Step-by-Step Solution:**

1. **Understanding Muscle Tissues**: Muscle tissues are specialized tissues in the body that have the ability to contract and enable movement. They are classified into three main types: skeletal, smooth, and cardiac muscles.

2. **Identifying Muscle Types**:
- **Skeletal Muscles**: These are attached to bones and are responsible for voluntary movements. They are striated (striped) in appearance and can get fatigued after prolonged use.
- **Smooth Muscles**: These are found in internal organs (like the digestive tract) and are not under voluntary control. They appear smooth and can sustain contractions for longer periods but still can tire.
- **Cardiac Muscles**: These are found only in the heart. They are striated like skeletal muscles but are involuntary, meaning they function without conscious control.

3. **Functionality and Fatigue**: The question asks for the type of muscle tissue that functions continuously without fatigue.
- Skeletal muscles get tired with exertion.
- Smooth muscles can sustain contractions but are not continuously active.
- Cardiac muscles, however, continuously contract and relax throughout a person’s life without tiring.

4. **Conclusion**: The only muscle tissue that functions continuously without fatigue is the **cardiac muscle**.

**Final Answer**: The muscular tissue which functions throughout life continuously without fatigue is the **cardiac muscle**.

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