1. The framework that provides support to human body is called:
A) Muscular system
B) Skeleton
C) Digestive system
D) Nervous system
2. The place where two bones meet is called:
A) Tendon
B) Ligament
C) Joint
D) Cartilage
3. Which tissue connects muscle to bone?
A) Tendon
B) Ligament
C) Cartilage
D) Marrow
4. The longest bone in human body is:
A) Humerus
B) Radius
C) Tibia
D) Femur
5. Which type of joint is present in shoulder?
A) Hinge joint
B) Ball and socket joint
C) Pivot joint
D) Gliding joint
6. The skeletal muscles are attached to bones by:
A) Tendons
B) Ligaments
C) Cartilage
D) Nerves
7. Which part of skeleton protects brain?
A) Vertebral column
B) Rib cage
C) Skull
D) Pelvis
8. The muscles work in pairs because muscles can:
A) Push only
B) Pull only
C) Rotate only
D) Bend only
9. Which structure reduces friction between bones at joints?
A) Tendon
B) Ligament
C) Bone marrow
D) Cartilage
10. The vertebral column consists of:
A) Vertebrae
B) Ribs
C) Femurs
D) Phalanges
11. Which type of muscle is involuntary?
A) Skeletal muscle
B) Striated muscle
C) Smooth muscle
D) Voluntary muscle
12. The joint present in elbow is:
A) Ball and socket joint
B) Hinge joint
C) Pivot joint
D) Fixed joint
13. Which mineral gives hardness to bones?
A) Calcium
B) Sodium
C) Potassium
D) Iron
14. The red bone marrow produces:
A) Hormones
B) Enzymes
C) Salts
D) Blood cells
15. Which structure connects bone to bone?
A) Tendon
B) Ligament
C) Cartilage
D) Muscle fiber
16. Which muscle type is found in heart?
A) Smooth muscle
B) Skeletal muscle
C) Cardiac muscle
D) Voluntary muscle
17. The rib cage protects:
A) Heart and lungs
B) Kidneys and liver
C) Brain and spinal cord
D) Stomach and intestine
18. The freely movable joints are also called:
A) Fibrous joints
B) Cartilaginous joints
C) Fixed joints
D) Synovial joints
19. Which part of skeleton supports body weight while standing?
A) Skull
B) Vertebral column
C) Rib cage
D) Pectoral girdle
20. The contraction of biceps causes the arm to:
A) Bend
B) Straighten
C) Rotate
D) Extend backward
21. Which disease causes softening of bones in children?
A) Arthritis
B) Osteoporosis
C) Rickets
D) Goiter
22. Which type of muscles are under conscious control?
A) Smooth muscles
B) Skeletal muscles
C) Cardiac muscles
D) Involuntary muscles
23. The central hollow cavity inside long bones contains:
A) Cartilage
B) Ligaments
C) Synovial fluid
D) Bone marrow
24. Which part of skeleton protects spinal cord?
A) Vertebral column
B) Skull
C) Rib cage
D) Pelvic girdle
25. Which type of joint is found between vertebrae?
A) Ball and socket joint
B) Hinge joint
C) Gliding joint
D) Pivot joint
26. The immovable joints are mainly present in:
A) Shoulder
B) Skull
C) Knee
D) Elbow
27. Which fluid lubricates synovial joints?
A) Blood plasma
B) Lymph
C) Tissue fluid
D) Synovial fluid
28. Which muscles straighten the arm at elbow joint?
A) Triceps
B) Biceps
C) Cardiac muscles
D) Smooth muscles
29. Which structure gives flexibility to joints?
A) Bone marrow
B) Calcium salts
C) Cartilage
D) Tendons
30. The pectoral girdle attaches arms to the:
A) Skull
B) Axial skeleton
C) Vertebral column
D) Pelvic girdle
31. Osteoporosis mainly occurs due to deficiency of:
A) Sodium
B) Potassium
C) Iron
D) Calcium
32. The lower jaw bone is called:
A) Mandible
B) Maxilla
C) Femur
D) Tibia
33. Which type of movement is possible at shoulder joint?
A) Forward and backward only
B) Up and down only
C) Movement in all directions
D) No movement
34. The human skeleton of an adult consists of approximately:
A) 150 bones
B) 206 bones
C) 300 bones
D) 500 bones
35. Which type of joint is found between atlas and axis vertebrae?
A) Pivot joint
B) Hinge joint
C) Ball and socket joint
D) Fixed joint
36. Which structure stores yellow bone marrow?
A) Compact bone
B) Cartilage
C) Periosteum
D) Medullary cavity
37. Which disease is characterized by painful swollen joints?
A) Rickets
B) Arthritis
C) Goiter
D) Diabetes
38. The muscles attached to bones are usually arranged in:
A) Single groups
B) Circular form
C) Antagonistic pairs
D) Parallel sheets
39. Which bone forms the forehead?
A) Frontal bone
B) Parietal bone
C) Occipital bone
D) Temporal bone
40. Which muscle type contracts slowly and does not fatigue quickly?
A) Skeletal muscle
B) Cardiac muscle
C) Striated muscle
D) Smooth muscle
41. The pelvic girdle mainly supports:
A) Head
B) Lower limbs
C) Arms
D) Rib cage
42. Which type of bone cells break down old bone tissue?
A) Osteocytes
B) Osteoblasts
C) Osteoclasts
D) Chondrocytes
43. Which movement decreases the angle between two bones?
A) Flexion
B) Extension
C) Rotation
D) Abduction
44. Which vitamin is essential for proper absorption of calcium?
A) Vitamin A
B) Vitamin D
C) Vitamin C
D) Vitamin K
45. The kneecap bone is called:
A) Tibia
B) Fibula
C) Tarsal
D) Patella
46. Which type of skeleton is present in insects?
A) Exoskeleton
B) Endoskeleton
C) Hydrostatic skeleton
D) Cartilaginous skeleton
47. Which bones protect the heart?
A) Vertebrae
B) Pelvic bones
C) Ribs
D) Femurs
48. Which condition causes decrease in bone density in old age?
A) Rickets
B) Osteoporosis
C) Arthritis
D) Goiter
49. Which part of skeleton forms the central axis of body?
A) Axial skeleton
B) Appendicular skeleton
C) Pectoral girdle
D) Pelvic girdle
50. The primary function of skeleton is to:
A) Digest food
B) Produce hormones
C) Absorb oxygen
D) Provide support and protection