Where does blood cell formation occur? In the

Correct Answer: D

Rationale: Blood cell formation (haemopoiesis) occurs in red marrow, active in flat bones and long bone ends. Blood, endosteum, and canals don’t produce cells. Answer is D, per the document.

Correct Answer: D

Rationale: The skull houses and protects sense organs (e.g., eyes in orbits, ears in temporal bones) alongside the brain. Lungs and diaphragm are thoracic, cells are everywhere—not skull-protected—making 'the sense organs' correct.

Correct Answer: D

Rationale: Muscles consist of fibres (elongated cells) bundled together, enabling contraction. Silica is in trace amounts, polyester is synthetic, calcium/phosphorus are bone minerals, making 'groups of cells called fibres' correct.

Correct Answer: D

Rationale: A facet is a flat or shallow surface on a bone where articulation occurs, such as in vertebral joints. A tubercle is a small projection, a fossa is a depression, and a fovea is a small pit—none describe a shallow articulating surface as precisely as facet.

Correct Answer: A

Rationale: Gliding joints allow sliding movements, as seen in the intercarpal joints (between wrist bones). The radiocarpal joint is a condyloid joint, intervertebral joints are cartilaginous (amphiarthroses), and phalangeal joints are hinges—not gliding.