What type of bone is found in the skull?

Correct Answer: C

Rationale: Flat bones, like cranial bones (e.g., parietal), are thin, broad, and protective, forming the skull's vault. Long bones are limbs (e.g., femur), short bones are wrist/ankle (e.g., carpals), and irregular bones are vertebrae. Flat bones' shape and protective role, per skeletal anatomy, make 'c' correct.

Correct Answer: B

Rationale: The temporal bone houses the middle ear (e.g., ossicles), facilitating hearing/balance, via its petrous portion. It protects the brain partially, but ear housing is primary. Cheekbone is zygomatic, spine support is vertebral. Temporal's auditory role, per skull, makes 'b' correct.

Correct Answer: C

Rationale: The skull is axial, not appendicular, which includes limbs and girdles (humerus , clavicle , femur ). Skull's midline role contrasts with appendicular's limb focus, per skeletal division, making 'c' correct.

Correct Answer: A

Rationale: Cancer cells lack differentiation, remaining unspecialized and 'generic,' unlike normal cells (e.g., liver cells) with specific roles, driving uncontrolled growth. They retain reproduction , often excessively, and responsiveness to some signals, not both . Loss of differentiation, a hallmark of cancer per pathology, makes 'a' correct.

Correct Answer: B

Rationale: The heart lies in the mediastinum, a central thoracic cavity subdivision between the lungs, housing heart and vessels. Cranial cavity holds the brain, posterior/dorsal includes spinal/brain cavities not heart. Not all only mediastinum fits. Its thoracic centrality, per anatomy, makes 'b' correct.