Cardiac muscles are different from skeletal muscles as they are

Options

A. smooth
B. voluntary
C. non-striated
D. involuntary

Explanation

**Step-by-Step Solution:**

1. **Understand the Types of Muscles**: There are three main types of muscles in the human body: cardiac, skeletal, and smooth muscles.

2. **Identify Cardiac Muscles**: Cardiac muscles are specifically associated with the heart. They are responsible for pumping blood throughout the body.

3. **Characteristics of Cardiac Muscles**:
- Cardiac muscles are striated, meaning they have a banded appearance under a microscope.
- They are involuntary muscles, which means their activity is not under conscious control. The heart beats automatically without needing to be consciously controlled.

4. **Identify Skeletal Muscles**: Skeletal muscles are attached to the skeleton and are responsible for voluntary movements, such as walking or lifting objects.

5. **Characteristics of Skeletal Muscles**:
- Skeletal muscles are also striated.
- They are voluntary muscles, meaning we can control their movements consciously.

6. **Comparison**: The key difference between cardiac and skeletal muscles is that cardiac muscles are involuntary while skeletal muscles are voluntary.

7. **Conclusion**: Based on the characteristics discussed, the correct answer to the question "Cardiac muscles are different from skeletal muscles as they are..." is that cardiac muscles are involuntary.

**Final Answer**: Cardiac muscles are different from skeletal muscles as they are involuntary.

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