Questions About the Skeletal System
Multiple-Choice Questions: Skeletal System
1. What is the main function of the skeletal system?
A) Blood circulation
B) Hormone production
C) Body support and protection
D) Nutrient absorption
E) Digestion
2. Which type of tissue primarily composes bones?
A) Cartilage tissue
B) Epithelial tissue
C) Muscle tissue
D) Connective tissue
E) Nervous tissue
3. What is the name of the largest bone in the human body?
A) Tibia
B) Humerus
C) Femur
D) Pelvis
E) Radius
4. The skeletal system works together with which system to allow movement?
A) Nervous system
B) Respiratory system
C) Muscular system
D) Circulatory system
E) Endocrine system
5. Where is red bone marrow primarily found?
A) Compact bone
B) Cartilage
C) Hollow shaft of long bones
D) Spongy bone
E) Tendons
6. What is the name of the tough membrane that covers bones?
A) Ligament
B) Periosteum
C) Epiphysis
D) Cartilage
E) Endosteum
7. Which of the following is not a function of the skeletal system?
A) Producing blood cells
B) Storing minerals
C) Protecting organs
D) Filtering toxins
E) Providing structure
8. Which mineral is most abundant in bones?
A) Iron
B) Sodium
C) Potassium
D) Calcium
E) Magnesium
9. Which part of the skeleton includes the skull, vertebral column, and rib cage?
A) Axial skeleton
B) Appendicular skeleton
C) Peripheral skeleton
D) Endoskeleton
E) Exoskeleton
10. The point where two bones meet is called a:
A) Ligament
B) Tendon
C) Joint
D) Marrow
E) Cartilage
11. What type of joint allows movement in all directions (e.g., shoulder)?
A) Hinge joint
B) Ball-and-socket joint
C) Pivot joint
D) Gliding joint
E) Fixed joint
12. What connects bone to bone?
A) Muscles
B) Cartilage
C) Ligaments
D) Tendons
E) Nerves
13. What is the function of cartilage in the skeletal system?
A) Generate blood cells
B) Store fat
C) Cushion joints and reduce friction
D) Transmit electrical signals
E) Detoxify chemicals
14. What type of bone cell is responsible for breaking down bone tissue?
A) Osteocyte
B) Osteoblast
C) Osteoclast
D) Chondrocyte
E) Myocyte
15. What is the hollow shaft of a long bone called?
A) Epiphysis
B) Metaphysis
C) Diaphysis
D) Compact bone
E) Endosteum
16. Which of the following bones is part of the appendicular skeleton?
A) Sternum
B) Skull
C) Femur
D) Vertebra
E) Ribs
17. Which of the following bones protects the brain?
A) Rib cage
B) Clavicle
C) Skull
D) Pelvis
E) Mandible
18. How many bones are in the adult human skeleton (on average)?
A) 198
B) 206
C) 215
D) 252
E) 196
19. What structure protects the spinal cord?
A) Rib cage
B) Vertebral column
C) Pelvis
D) Scapula
E) Clavicle
20. What is the name of the process by which bone is formed?
A) Myogenesis
B) Osteolysis
C) Hematopoiesis
D) Ossification
E) Mineralization
Answer Key with Explanations
1. C) Body support and protection – The skeleton provides the framework and protects vital organs.
2. D) Connective tissue – Bone is a specialized form of connective tissue.
3. C) Femur – The thigh bone; longest and strongest bone.
4. C) Muscular system – Muscles attach to bones to produce movement.
5. D) Spongy bone – Contains red marrow, especially in flat bones.
6. B) Periosteum – A membrane that covers and nourishes bones.
7. D) Filtering toxins – This is a liver or kidney function, not skeletal.
8. D) Calcium – Gives bones their strength and rigidity.
9. A) Axial skeleton – Includes skull, vertebrae, and thoracic cage.
10. C) Joint – Where two or more bones articulate.
11. B) Ball-and-socket joint – Allows the widest range of movement.
12. C) Ligaments – Strong connective tissues between bones.
13. C) Cushion joints and reduce friction – Cartilage is flexible and reduces bone-to-bone contact.
14. C) Osteoclast – Breaks down bone tissue during remodeling.
15. C) Diaphysis – The long, central shaft of a long bone.
16. C) Femur – Part of the limbs, thus appendicular.
17. C) Skull – Encases and protects the brain.
18. B) 206 – Standard count for adults; varies slightly with extra bones.
19. B) Vertebral column – Protects the spinal cord.
20. D) Ossification – The biological process of bone formation.
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