The bone that extends from the shoulder to the arm is the humerus.
Understanding the Shoulder Bones
The shoulder is a complex area, consisting of several bones that work together to provide a wide range of motion. According to the provided reference, the key bones of the shoulder include:
- Humerus: The upper arm bone, which connects the shoulder to the elbow.
- Scapula: Also known as the shoulder blade, located on the back of the shoulder.
- Clavicle: The collar bone, which is the only bony link between the arm and the trunk of the body.
Here's a table summarizing the shoulder bones and their roles:
| Bone | Description | Role |
|---|---|---|
| Humerus | Upper arm bone | Connects shoulder to the elbow |
| Scapula | Shoulder blade | Provides a site for muscles to attach and helps with movement |
| Clavicle | Collar bone | Connects the arm to the trunk |
The Humerus: Connection Between Shoulder and Arm
The humerus plays a crucial role in arm movement. It's a long bone that articulates with the scapula at the shoulder and the ulna and radius at the elbow. This bone is responsible for:
- Allowing the arm to move in various directions.
- Providing an anchor for the muscles that control the shoulder and arm.
- Helping in the range of motion required for daily activities.
Therefore, when we talk about the bone directly connecting the shoulder to the arm, we are referring to the humerus.
