The elbow joint is an example of -

Correct option is A

Sol. The elbow joint is a hinge joint, allowing movement in only one direction (flexion and extension). Hinge joints operate like a door hinge and are found in the knee, fingers, and toes. The elbow consists of the humerus, radius, and ulna bones, forming a stable joint structure.
Explanation of Each Option:
· Hinge joint: Correct answer; allows movement in a single plane, like the elbow and knee.
· Ball and socket joint: Incorrect; allows multidirectional movement (e.g., shoulder and hip joints).
· Gliding joint: Incorrect; permits sliding motions, found in wrists and ankles.
· Pivot joint: Incorrect; allows rotational movement, found in the neck (atlantoaxial joint).