Question

the hip joint is an example of a ____________.pivot jointhinge jointball and socket jointsaddle jointquestion 61.5 ptsthe atlas/axis joint is an example of a ____________.ball and socket jointhinge jointsaddle jointpivot joint

Explanation:

• Ball and socket joint: In a ball - and - socket joint, one bone has a rounded head (ball) that fits into a cup - like socket of another bone. The hip joint has the head of the femur (ball) fitting into the acetabulum (socket) of the pelvis, allowing a wide range of motion in multiple planes (flexion/extension, abduction/adduction, rotation).
• Pivot joint: A pivot joint allows rotational movement around a single axis. The atlas/axis joint (between the first and second cervical vertebrae) is a pivot joint. The axis has a bony projection (dens) around which the atlas rotates, enabling side - to - side rotation of the head (e.g., shaking the head “no”).
• Hinge joint: A hinge joint allows movement in only one plane (flexion and extension), like the elbow or knee.
• Saddle joint: A saddle joint has a saddle - shaped surface on one bone that fits into a complementary surface on another bone. It allows movement in two planes (e.g., the carpometacarpal joint of the thumb).

Answer:

• For the hip joint: ball and socket joint
• For the atlas/axis joint: pivot joint