An arm can bend approximately 180 degrees at the elbow joint.
This bending motion, also known as flexion, is primarily facilitated by the elbow joint. The elbow allows the forearm to move towards the upper arm, achieving a near straight line. The straightening motion, or extension, also reaches approximately 180 degrees.
Here's a breakdown:
- Flexion: Bending the arm at the elbow joint.
- Extension: Straightening the arm at the elbow joint.
The elbow joint's structure, including bones, ligaments, and muscles like the biceps and triceps, contributes to this range of motion. While 180 degrees is a general approximation, individual flexibility can vary based on factors like age, genetics, and physical conditioning.
