Where are the bones known as the humerus and radius located?

Correct Answer: B

Rationale: Humerus (upper arm) and radius (forearm) are in the arm, part of the appendicular skeleton. ‘In the arm’ is more specific than ‘axial.’ Answer is B, per the document.

Correct Answer: B

Rationale: The cranium (skull’s cranial bones) encases and protects the brain. Calcium is a mineral, cerebrum and cerebellum are brain parts, not bones, making 'The cranium' correct.

Correct Answer: C

Rationale: A joint (articulation) is where two bones meet (e.g., knee), including hinge or ball-and-socket types (A, B). Tendons connect muscle to bone, not joints, making 'The place where two bones are joined' correct.

Correct Answer: B

Rationale: Synovial fluid, which lubricates freely movable diarthrotic joints, is secreted by the synovial membrane lining the joint cavity. Menisci are fibrocartilage pads aiding stability, bursae are fluid-filled sacs reducing friction outside joints, and articular cartilage provides a smooth surface but doesn’t produce fluid.

Correct Answer: D

Rationale: The optic foramen, through which the optic nerve passes, is located in the sphenoid bone of the skull, near the orbit. The ethmoid, occipital, and palatine bones do not contain this structure.