What term is applied to moving the thigh laterally away from the midline of the body?

Correct Answer: C

Rationale: Abduction moves a limb away from the midline (e.g., thigh laterally). Extension straightens, adduction moves toward, flexion bends. Answer is C, per the document.

Correct Answer: D

Rationale: Compact bone is dense with osteons, while spongy bone is porous with trabeculae—differing in cell arrangement, not marrow type, material (both hydroxyapatite), or cell size. 'They have different arrangement of bone cells' is correct.

Correct Answer: A

Rationale: Osteoporosis involves excessive bone resorption. Cortisol (from the adrenal glands) stimulates osteoclast activity, which breaks down bone tissue, potentially leading to porosity if unbalanced. Estrogen supports osteoblasts (bone formation), thyroid hormone can increase both formation and resorption but isn’t primarily linked to osteoporosis, and thyrocalcitonin (calcitonin) inhibits osteoclasts, reducing bone loss.

Correct Answer: D

Rationale: The axial skeleton includes the skull (sphenoid), vertebral column (sacrum), and hyoid bone. The clavicle (collarbone) is part of the appendicular skeleton, specifically the pectoral girdle, not the axial skeleton.

Correct Answer: D

Rationale: The mastoid process, a bony projection behind the ear, is part of the temporal bone. The sphenoid, parietal, and occipital bones lack this feature.