a) Explain the structure of a ball and socket joint.
b) Give two examples of such joints in the human body.
c) What kind of movement do such joints allow?
Answers
a) Where the round end of a bone fits into the cavity of another bone. Classified functionally as multiaxial joints because they can move bones along several axes.
b) The femur attached to the hip and the humorus attached to the shoulder
c)The muscles that surround the joints permit the humerus and femur to move away from the body’s midline (abduction), toward the body’s midline (adduction), forward (flexion), and backwards (extension). The humerus and femur can also move around the joint in a full circle (circumduction) as well as rotate both medially and laterally around their axis.
Answer:
Explanation:
In a ball and socket joint the end of the bones is round like a ball. It fits into a hollow part in the other bone. The shoulder and hip joints are two examples. It allows movement in all directions