The muscle tissue type that consists of very long, cylindrical, multinucleate cells with very obvious striations is :

Options

A. skeletal muscle only
B. cardiac and smooth muscle
C. cardiac and skeletal muscle
D. cardiac muscle only

Answer

To solve the question regarding the muscle tissue type that consists of very long, cylindrical, multinucleate cells with very obvious striations, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Types of Muscle Tissue**:
- There are three main types of muscle tissues: smooth muscle, skeletal muscle, and cardiac muscle.

2. **Characteristics of Smooth Muscle**:
- Smooth muscle is spindle-shaped and has a single nucleus (uninucleate). It does not have striations.

3. **Characteristics of Skeletal Muscle**:
- Skeletal muscle is long, cylindrical, and multinucleate (contains multiple nuclei). It has very obvious striations (light and dark bands).

4. **Characteristics of Cardiac Muscle**:
- Cardiac muscle is also long and cylindrical, multinucleate, and has striations. However, it is branched.

5. **Evaluate the Given Options**:
- **Option 1: Skeletal muscles only** - This option is incorrect because cardiac muscle also fits the description.
- **Option 2: Cardiac and smooth muscle** - This option is incorrect because smooth muscle does not have striations.
- **Option 3: Cardiac and skeletal muscle** - This option is correct as both types meet all the criteria.
- **Option 4: Cardiac muscle only** - This option is incorrect because skeletal muscle also fits the description.

6. **Conclusion**:
- The muscle tissue type that consists of very long, cylindrical, multinucleate cells with very obvious striations is both skeletal and cardiac muscle. Therefore, the correct answer is **Option 3: Cardiac and skeletal muscle**.