NEET Biology: Disorders of muscular and skeletal system-Osteoporosis Practice Questions
14 free multiple-choice questions on Disorders of muscular and skeletal system-Osteoporosis (Locomotion and Movement) for NEET Biology, each with the correct answer and a step-by-step explanation. Attempt a question, then reveal the solution to check your reasoning.
Practice thousands more NEET questions in the app →Q1. In terms of bone structure, osteoporosis involves a reduction in the density of which type of bone tissue?
Show answer & explanation
Correct answer: B — Compact bone
Osteoporosis involves a reduction in the mineral density of the compact (cortical) bone, making it weaker.
Q2. Deficiencies in dietary protein can lead to which type of skeletal issue, especially during growth phases?
Show answer & explanation
Correct answer: C — Rickets
Insufficient protein intake, especially during childhood and adolescence, hinders the proper mineralization of bones, leading to skeletal deformities like Rickets.
Q3. The main imbalance in the process of bone remodeling that characterizes osteoporosis is the disruption between which two cellular activities?
Show answer & explanation
Correct answer: A — Osteoclast activity and Osteoblast activity
Bone remodeling involves the coordinated action of osteoblasts (building bone) and osteoclasts (resorbing bone). Osteoporosis occurs when the rate of resorption (by osteoclasts) is faster than the rate of formation (by osteoblasts).
Q4. Osteoporosis primarily affects which part of the human body?
Show answer & explanation
Correct answer: D — Skeletal system
Osteoporosis is a disease related to the skeletal system, specifically affecting the bones and their density.
Q5. Which type of bone cell is primarily responsible for breaking down bone tissue during remodeling?
Show answer & explanation
Correct answer: D — Osteoclasts
Osteoclasts are specialized cells that break down old or damaged bone tissue, which is a crucial part of bone remodeling.
Q6. Osteoporosis primarily results from an imbalance in which physiological process of bone maintenance?
Show answer & explanation
Correct answer: B — Bone remodeling
Osteoporosis is characterized by an imbalance where bone resorption (breakdown) exceeds bone formation (building), leading to net bone loss.
Q7. Which lifestyle factor is most important for preventing the development of osteoporosis?
Show answer & explanation
Correct answer: D — Regular weight-bearing exercise
Weight-bearing exercises help strengthen bones by applying mechanical stress, thus preventing density loss.
Q8. A key consequence of severe osteoporosis is an increased risk of which type of injury?
Show answer & explanation
Correct answer: B — Bone fractures
Due to reduced bone density and decreased strength, the most significant consequence of osteoporosis is an increased susceptibility to fractures.
Q9. In the context of bone structure, the loss of fine bony struts within spongy bone is a defining feature of which condition?
Show answer & explanation
Correct answer: D — Osteoporosis
Osteoporosis is fundamentally defined by the loss of bone mass and the resulting deterioration of the internal trabecular structure, which is visualized as the loss of these connecting struts.
Q10. The process by which bone is broken down and new bone is formed is known as:
Show answer & explanation
Correct answer: B — Bone Remodeling
Bone remodeling involves the continuous process where bone is broken down (resorption) and newly formed bone is deposited.
Q11. Which of the following factors is most strongly associated with an increased risk of developing osteoporosis?
Show answer & explanation
Correct answer: B — Advanced age and post-menopausal status
Advanced age and the post-menopausal status (loss of estrogen) are the primary risk factors for developing osteoporosis.
Q12. Osteocytes are mature bone cells that reside within the bone matrix and play a role in sensing mechanical stress.
Show answer & explanation
Correct answer: C — True
Osteocytes are mature bone cells embedded in the bone tissue that monitor mechanical signals within the bone.
Q13. Which condition is characterized by a decrease in bone density, making bones porous and fragile?
Show answer & explanation
Correct answer: A — Osteoporosis
Osteoporosis is specifically a condition defined by reduced bone mass and density, leading to skeletal fragility.
Q14. Which vitamin deficiency is most closely associated with impaired calcium absorption leading to bone weakness?
Show answer & explanation
Correct answer: D — Vitamin D
Vitamin D is essential for the absorption of calcium from the diet, which is crucial for bone mineralization and strength.
Keep going — practice on Padhai Karlo
Padhai Karlo gives you unlimited NEET practice: chapter-wise questions, timed quizzes, and full mock tests with an All-India Rank — free to start.
Get the free Android app →