For example, your elbow joint has two muscles that move your forearm up or down. These are the biceps on the front of the upper arm and the triceps on the back of the upper arm: to raise the forearm, ...

Muscles are attached to bones by tendons. Muscles contract to move our bones by pulling on them. However, muscles can only pull; they cannot push. This is why they usually work a joint in pairs. One ...

Possible causes of pain in the middle of the biceps include muscle strain, bruising, and more. In rare cases, it can be due to a heart attack. Treatments will depend on the cause. The biceps is the ...

Medically reviewed by Mallory Christopherson, DC Key Takeaways The shoulder joint is made up of four joints that work together for movement and stability.The rotator cuff, which includes four muscles, ...