Question

drag the tiles to the correct boxes to complete the pairs. match the joints to their types. wrist joint base of the skull elbow joint hip joint thumb joint ball and socket saddle hinge gliding pivot

Explanation:

• Ball and socket: This joint type allows for a wide range of motion in multiple directions. The hip joint has a ball - like head (femoral head) that fits into a socket (acetabulum), enabling movements such as flexion, extension, abduction, adduction, and rotation.
• Saddle: The saddle joint has a shape that resembles a saddle. The thumb joint (carpometacarpal joint of the thumb) has a saddle - like structure which allows for opposition (touching the thumb to other fingers) and a good range of movement in two planes.
• Hinge: A hinge joint allows movement in mainly one plane (flexion and extension). The elbow joint (humeroulnar joint) is a classic hinge joint where the ulna articulates with the humerus, allowing the arm to bend and straighten.
• Gliding: Gliding joints allow bones to glide over one another. The wrist joint (radiocarpal joint) is a gliding joint (along with some ellipsoid characteristics in a broader sense, but mainly gliding for the basic matching here) where the radius and carpal bones move over each other.
• Pivot: A pivot joint allows for rotational movement around a single axis. The joint at the base of the skull (atlanto - axial joint) is a pivot joint. The atlas (C1) rotates around the axis (C2), allowing for the side - to - side rotation of the head (e.g., shaking the head to say “no”).

Answer:

• ball and socket → hip joint
• saddle → thumb joint
• hinge → elbow joint
• gliding → wrist joint
• pivot → base of the skull