Which of these is the muscle that pumps blood around the body?
Muscles work in pairs. When we move a joint, one muscle gets shorter (contracts) and the other gets longer (relaxes).
When you bend your arm as shown, which muscle contracts?
What happens to the triceps muscle when the arm is bent?
Muscles and joints allow our bodies to move. This joint is called the elbow.
What part is shown in the label marked A?
Tendons attach muscles to the bone. Which labels show the tendons?