The artery are made of which muscles.  

Options

A. skeletal muscles
B. cardiac muscles
C. smooth muscles
D. all the above

Answer

### Step-by-Step Solution:

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

2. **Understand the Function of Each Muscle Type**:
- **Skeletal Muscle**: This type of muscle is attached to the skeleton and is responsible for voluntary movements. We can consciously control these muscles (e.g., biceps, triceps).
- **Cardiac Muscle**: This muscle is found only in the heart and is responsible for pumping blood. It is an involuntary muscle, meaning it operates without conscious control.
- **Smooth Muscle**: This muscle type is found in the walls of internal organs and blood vessels. It is also involuntary and helps in functions like moving blood through arteries.

3. **Determine the Composition of Arteries**:
- Arteries are blood vessels that carry blood away from the heart to various tissues in the body. The walls of arteries are composed primarily of smooth muscle tissue, which allows them to contract and regulate blood flow.

4. **Conclude the Correct Answer**:
- Given the options (skeletal muscle, cardiac muscle, smooth muscle, or all of the above), the correct answer is **smooth muscle** since arteries are primarily made of this type of muscle.

### Final Answer:
Arteries are made of **smooth muscle**.

---