Question
Describe how bone and muscles bring about movement in the elbow
Answers
Answered by
GPT 3.5
The movement in the elbow joint is brought about by the coordinated action of bones and muscles. The elbow joint is a hinge joint formed by the humerus, radius, and ulna bones. When the biceps muscle contracts, it causes the forearm to flex at the elbow joint, bringing the hand closer to the shoulder. This movement is enabled by the contraction of the biceps muscle, which attaches to the radius bone.
On the other hand, when the triceps muscle contracts, it causes the forearm to extend at the elbow joint, moving the hand away from the shoulder. The triceps muscle attaches to the ulna bone and is responsible for extending the forearm.
The bones act as levers, providing a stable structure for muscles to attach and exert force on, allowing for movement at the elbow joint. The muscles, in turn, contract and relax to create movement by pulling on the bones. The coordinated action of these bones and muscles enables the elbow joint to flex and extend, allowing for a wide range of motion in the arm.
On the other hand, when the triceps muscle contracts, it causes the forearm to extend at the elbow joint, moving the hand away from the shoulder. The triceps muscle attaches to the ulna bone and is responsible for extending the forearm.
The bones act as levers, providing a stable structure for muscles to attach and exert force on, allowing for movement at the elbow joint. The muscles, in turn, contract and relax to create movement by pulling on the bones. The coordinated action of these bones and muscles enables the elbow joint to flex and extend, allowing for a wide range of motion in the arm.