The superior and middle conchae are bony structures of which bone?

Correct Answer: C

Rationale: The superior and middle conchae (turbinates) are projections of the ethmoid bone in the nasal cavity, aiding air filtration. The inferior concha is separate, while palatine, nasal, and maxilla bones don’t form these structures.

Correct Answer: A

Rationale: Lordosis is an exaggerated inward curvature of the lower spine (lumbar region). Scoliosis is lateral deviation, kyphosis is outward curvature (hunchback), and spina bifida is a congenital defect, not a curvature.

Correct Answer: D

Rationale: The nasal septum is composed of hyaline cartilage, a smooth, resilient type that provides support and shape. Elastic cartilage (e.g., ear) is flexible, fibrous cartilage (e.g., intervertebral discs) is tough, and calcified cartilage is hardened—none match the nasal septum’s properties or repair needs as well as hyaline.

Correct Answer: D

Rationale: The axial skeleton includes the skull (22 bones), vertebral column (26 bones), ribs (24 bones), and sternum (1 bone), totaling 80 bones. The appendicular skeleton has 126 bones, making 90 and 126 incorrect, and 60 too low for the axial components.

Correct Answer: A

Rationale: Ligaments are fibrous connective tissues that connect bones to other bones, stabilizing joints (e.g., in the knee or ankle). This distinguishes them from tendons (muscle to bone), making ‘True’ the correct answer.