This quiz works best with JavaScript enabled. Home > Science > Skeletal System – Quiz 643 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Skeletal System Quiz 643 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is located at number 6? A) Fibula. B) Humerus. C) Femur. D) Tibia. Show Answer Correct Answer: C) Femur. 2. The spongy bone is composed of osteocytes A) False. B) True. Show Answer Correct Answer: B) True. 3. Which of the following organs is protected by the backbone? A) Brain. B) Spinal Cord. C) Heart. D) Lungs. Show Answer Correct Answer: B) Spinal Cord. 4. At what age does bone growth typically stop? A) 18. B) 30. C) 40. D) 25. Show Answer Correct Answer: D) 25. 5. Which important function of long bone is related to the production of healthy blood cells? A) Amphiarthroses. B) Epiphysis. C) Hemopoiesis. D) Phalanges. Show Answer Correct Answer: C) Hemopoiesis. 6. My ear is ..... to my nose A) Medial. B) Lateral. C) Anterior. D) Posterior. Show Answer Correct Answer: B) Lateral. 7. Which of these occurs first during a muscle contraction? A) The nerve signal reaches the neuromuscular junction. B) Ach is released and opens Na ion channels. C) The sarcomere shortens. D) The myosin binds to the actin. Show Answer Correct Answer: A) The nerve signal reaches the neuromuscular junction. 8. Scapula, ribs, pelvis A) Long Bone. B) Short Bone. C) Flat Bone. D) Irregular Bone. E) Sesamoid. Show Answer Correct Answer: C) Flat Bone. 9. What type of joints open and close? A) Saddle. B) Hinge. C) Gliding. D) Pivot. E) Ball and Socket. Show Answer Correct Answer: B) Hinge. 10. What skeletal disease leads the formation of crystals in the joints due to the buildup of uric acid? A) Rheumatoid arthritis. B) Rickets. C) Osteoporosis. D) Gout. Show Answer Correct Answer: D) Gout. 11. What is #20? A) Ribs. B) Pelvis. C) Vertebrae. D) Strive. Show Answer Correct Answer: A) Ribs. 12. We can use ..... to see bones inside the body. A) X-ray. B) X-run. C) X-change. D) X-cident. Show Answer Correct Answer: A) X-ray. 13. What structure consists of groups of organs working together to perform a function? A) Cell. B) Organ. C) Tissue. D) Organ System. Show Answer Correct Answer: D) Organ System. 14. Which of the following is match INCORRECTLY? A) Calcium = strength. B) Magnesium = energy storage. C) Phosphorus = energy storage. D) Magnesium = bone density. Show Answer Correct Answer: B) Magnesium = energy storage. 15. Skeletal muscles enable movement in the body because they attached to bones by A) Joints. B) Cartilage. C) Tendons. D) Ligaments. Show Answer Correct Answer: C) Tendons. 16. Broad as they are long A) Long bones. B) Short bones. C) Flat bones. D) Irregular bones. Show Answer Correct Answer: B) Short bones. 17. Compact bone is characterized by ....., whereas spongy bone is characterized by ..... A) Small needle like pieces of bone and lots of open space; dense tissue that looks smooth and homogenous. B) Dense tissue that looks smooth and homogenous; small needlelike pieces of bone and lots of open space. C) Having epiphyses; having diaphysis. D) Having red bone marrow; having osteons. E) Its internal location in bones; its external location in bones. Show Answer Correct Answer: B) Dense tissue that looks smooth and homogenous; small needlelike pieces of bone and lots of open space. 18. These are the joints between vertebrae. A) Fixed Joints. B) Gliding Joints. C) Pivot Joints. D) Hinge Joints. Show Answer Correct Answer: B) Gliding Joints. 19. Osteoporosis is when bones become brittle due to loss of bone mass (amount of bone tissue, and large holes in bone form). Which of the following exercises WILL NOT prevent osteoporosis A) Swimming. B) Weight lifting. C) Walking. D) Jogging. Show Answer Correct Answer: A) Swimming. 20. The functional contractile unit within a muscle fiber is called the A) Sarcomere. B) Fascia. C) Sarcoplasm. D) Tendon. Show Answer Correct Answer: A) Sarcomere. ← PreviousNext →Related QuizzesSkeletal System Quiz 1Skeletal System Quiz 2Skeletal System Quiz 3Skeletal System Quiz 4Skeletal System Quiz 5Skeletal System Quiz 6Skeletal System Quiz 7Skeletal System Quiz 8Skeletal System Quiz 9Skeletal System Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books