The largest coxal bone is the ischium.

Correct Answer: B

Rationale: The ilium is the largest coxal bone region, forming the upper pelvis. The ischium is smaller, supporting sitting, making 'False' correct.

Correct Answer: D

Rationale: The appendicular skeleton has 126 bones (upper/lower limbs, pectoral/pelvic girdles) at the body’s extremities. The axial skeleton has 80 bones centrally. '100' and '80 at extremities' are incorrect, making 'Consists of 126 bones which are located at the extremities of the body' accurate.

Correct Answer: D

Rationale: The shape function defines the body’s form (e.g., height, width), varying with growth. A is support, B is blood production, and C is protection, making 'The skeleton gives the body shape, which changes with growth and makes you tall or short' the shape function.

Correct Answer: B

Rationale: The wrist (radiocarpal joint) is a condyloid joint, allowing flexion, extension, abduction, and adduction. Pivot is rotation (e.g., neck), saddle is thumb, and gliding is sliding, making 'Condyloid' correct.

Correct Answer: C

Rationale: Osteocytes reside in lacunae, small spaces within the lamellae of osteons in compact bone, extending processes into canaliculi for nutrient exchange. Osteons are the units, canaliculi are channels, and lamellae are layers. Answer is C, per the document.