To one of the lateral surface of humerus, a muscle is attached called

Options

A. Biceps brachii
B. Deltoidius
C. Sertorius
D. Messeter

Answer

To answer the question, "To one of the lateral surfaces of the humerus, a muscle is attached called," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Bone**: The humerus is the long bone in the upper limb that runs from the shoulder to the elbow.

2. **Understand the Question**: The question asks for a muscle that is attached to the lateral surface of the humerus.

3. **Consider the Options**: The options given are:
- Biceps brachii
- Deltoid
- Sartorius
- Masseter

4. **Analyze Each Option**:
- **Biceps Brachii**: This muscle is located on the anterior side of the upper arm and primarily acts on the elbow joint.
- **Deltoid**: This muscle is located on the lateral aspect of the shoulder and is responsible for shoulder abduction and stabilization of the humeral head.
- **Sartorius**: This muscle is located in the thigh and is not attached to the humerus.
- **Masseter**: This muscle is involved in chewing and is located in the jaw, not related to the humerus.

5. **Conclusion**: The muscle that is attached to the lateral surface of the humerus is the **Deltoid muscle** (also known as deltoidus). This muscle plays a crucial role in stabilizing the shoulder joint, especially during activities that involve lifting or carrying weights.

### Final Answer:
The muscle attached to one of the lateral surfaces of the humerus is called the **Deltoid muscle** (deltoidus).

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