Cardiac muscle cells differ from striated muscle cells in having

Options

A. a centrally located nucleus
B. differeny myofibrils
C. fewer mitochondria
D. no sarcoplasmic reticulum

Explanation

### Step-by-Step Solution:

1. **Identify the Types of Muscle Cells**:
- Understand that there are different types of muscle cells, specifically cardiac muscle cells and striated muscle cells (also known as skeletal muscle cells).

2. **Define Cardiac Muscle Cells**:
- Cardiac muscle cells are found only in the heart. They are striated (striped appearance) and involuntary, meaning they function without conscious control.

3. **Define Striated Muscle Cells**:
- Striated muscle cells, or skeletal muscles, are attached to bones and are responsible for voluntary movements. They also have a striated appearance.

4. **Compare Nucleus Presence**:
- Cardiac muscle cells are typically uninucleate, meaning they have a single nucleus that is centrally located within the cell.
- In contrast, striated muscle cells are multinucleate, meaning they contain multiple nuclei that are located at the periphery of the cell.

5. **Conclude the Key Difference**:
- The primary difference between cardiac muscle cells and striated muscle cells is the number and location of the nuclei. Cardiac muscle cells have a single, centrally located nucleus, while striated muscle cells have multiple nuclei located at the edges.

### Final Answer:
Cardiac muscle cells differ from striated muscle cells in having a single, centrally located nucleus.

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