Final answer:
The upper inside of the humerus articulates with the ulna bone, forming the elbow joint along with the radius. It is the only bone in the upper arm and is essential for limb movement and stability.
Step-by-step explanation:
The upper inside part of the humerus articulates with the ulna bone of the forearm. The humerus is the single bone of the upper arm and forms the elbow joint by articulating with both the radius and the ulna. Specifically, the humerus connects to the ulna at the hing joint, allowing for movements such as flexion and extension of the arm. The humerus is important for arm stability and movement, as it is the only bone of the arm and plays a crucial role in the articulation of the forearm and the shoulder.
- Hyoid Bone: U-shaped, located in the upper neck, but does not articulate with other bones, including the humerus.
- Hing Joint: Allows the articulation and movement between the humerus and the ulna.
- Humerus: The only bone in the upper arm, articulating with the scapula at the shoulder and with the forearm at the elbow.