Which one of the following statements is wrong?

The correct answer is Option 2.

Key Points

• The human cranium is actually made up of 8 bones, not 9. These include one frontal bone, two parietal bones, two temporal bones, one occipital bone, one sphenoid bone, and one ethmoid bone.
• The cranium forms the protective encasement for the brain within the skull and also provides attachment sites for the muscles of the head and neck.
• Each of these bones, except for the mandible (lower jaw), is fused together by sutures – fibrous joints that afford protection and strength to the human brain.

Additional Information

• Hip girdle: The hip girdle, or pelvic girdle, indeed consists of three bones - the ilium, ischium, and pubis, which are fused together in adults to form the coxal bone.
• Forelimb: In humans, each forelimb indeed has 30 bones, divided among the arm (humerus), the forearm (radius and ulna), the wrist (carpal bones), and the hand (metacarpal bones and phalanges).
• The ribs: Humans typically do have 12 pairs of ribs, totaling 24 ribs. These include 7 pairs of true ribs, 3 pairs of false ribs, and 2 pairs of floating ribs.