🦴 Chapter 13: Skeletal System of Human Body Posted on February 28, 2026February 28, 2026 By admin 🦴 Chapter 13: Skeletal System of Human Body 🦴 Chapter 13: Skeletal System of Human Body 1 / 54 1. Which of the following is a function of the skeletal and muscular system? (a) It helps in movement and locomotion. (b) It supports the body and protects internal organs. (c) It gives shape to body parts and bears the body’s weight. (d) All of these 📘 Explanation: The skeletal system helps in movement, support, protection, and maintaining body shape. 📘 Explanation: The skeletal system helps in movement, support, protection, and maintaining body shape. 2 / 54 2. The human skeletal system is mainly made of which tissues? (a) Epithelial tissue (b) Muscular tissue (c) Connective tissue (d) Nervous tissue 📘 Explanation: Bones and cartilage are types of connective tissue, which form the skeletal system. 📘 Explanation: Bones and cartilage are types of connective tissue, which form the skeletal system. 3 / 54 3. The human skeleton is made of — (a) Only bones (b) Only cartilage (c) Both bones and cartilage (d) None of these 📘 Explanation: The skeleton consists of bones (hard) and cartilage (flexible), such as in the nose and ears. 📘 Explanation: The skeleton consists of bones (hard) and cartilage (flexible), such as in the nose and ears. 4 / 54 4. How many bones are there in the adult human body? (a) 80 (b) 96 (c) 206 (d) 100 5 / 54 5. Consider the following statements: Q: At birth, humans have about 300 bones. Answer: True 📘 Explanation: At birth, we have approximately 300 bones, many of which fuse to form 206 bones in adults 6 / 54 6. Which bones form the upper limbs (forelimbs)? (a) Radius (b) Femur (c) Ulna (d) Humerus 🦴 Correct Answer: All except (b) The forelimbs include: Humerus (upper arm) Radius and Ulna (lower arm) ✅ Best Answer: (a), (c), and (d) 7 / 54 7. Which of the following statements is NOT true? (a) Bones and muscles form organ systems (b) Bones are formed from osteoblasts (c) The skull has a hollow cavity for the brain, made only of muscle (d) Cartilage is soft and flexible and found in ear, nose, etc. 📘 Explanation: The skull is made of bone, not just muscles. So (c) is false. 📘 Explanation: The skull is made of bone, not just muscles. So (c) is false. 8 / 54 8. How many bones are joined in the chest (thoracic region)? (a) 7 (b) 8 (c) 12 (d) 14 📘 Explanation: There are 12 pairs of ribs in the human thorax. 📘 Explanation: There are 12 pairs of ribs in the human thorax. 9 / 54 9. What are "True Ribs"? (a) First 7 pairs of ribs (b) 8th and 9th pairs (c) 11th and 12th pairs (d) All of these 📘 Explanation: True ribs are directly attached to the sternum via cartilage. 📘 Explanation: True ribs are directly attached to the sternum via cartilage. 10 / 54 10. What are "False Ribs"? (a) 8th pair only (b) 9th pair only (c) 8th to 10th pairs (d) All of these 📘 Explanation: False ribs are indirectly attached to the sternum or not attached at all. 📘 Explanation: False ribs are indirectly attached to the sternum or not attached at all. 11 / 54 11. Which structure makes the rib cage? (a) Thoracic vertebrae (b) Sternum (c) Ribs (d) All of these 📘 Explanation: The rib cage includes: Ribs Thoracic vertebrae (back) Sternum (front chest bone) 📘 Explanation: The rib cage includes: Ribs Thoracic vertebrae (back) Sternum (front chest bone) 12 / 54 13. How many bones are present in the facial region of the human skull? (a) 22 (b) 8 (c) 12 (d) 14 📘 Explanation: The human facial skeleton contains 14 bones (excluding the cranium). 📘 Explanation: The human facial skeleton contains 14 bones (excluding the cranium). 13 / 54 12. How many bones are found in the cranium (head region)? (a) 22 (b) 8 (c) 14 (d) 1 📘 Explanation: The cranium (brain case) is made of 8 bones. The total skull has 22 bones, including facial bones. 📘 Explanation: The cranium (brain case) is made of 8 bones. The total skull has 22 bones, including facial bones. 14 / 54 14. The smallest and largest bones are found in which part of the ear? (a) Outer ear (b) Middle ear (c) Inner ear (d) All of these 📘 Explanation: The ossicles (malleus, incus, stapes) are found in the middle ear, and stapes is the smallest bone in the body 📘 Explanation: The ossicles (malleus, incus, stapes) are found in the middle ear, and stapes is the smallest bone in the body 15 / 54 15. The U-shaped bone in English known as the Hyoid Bone is found in which part? (a) Ear (b) Hand (c) Throat (d) Skull 📘 Explanation: The hyoid bone is a U-shaped bone located in the neck; it supports the tongue. 📘 Explanation: The hyoid bone is a U-shaped bone located in the neck; it supports the tongue. 16 / 54 16. How many bones are present in the skull? (a) 14 (b) 6 (c) 30 (d) 29 📘 Explanation: The human skull is made up of 29 bones (including cranial, facial, and auditory bones). 📘 Explanation: The human skull is made up of 29 bones (including cranial, facial, and auditory bones). 17 / 54 17. How many bones are there in the vertebral column (spinal cord)? (a) 30 (b) 33 (c) 28 (d) 26 📘 Explanation: The vertebral column consists of 33 vertebrae, though in adults, some fuse to form 26 bones. 📘 Explanation: The vertebral column consists of 33 vertebrae, though in adults, some fuse to form 26 bones. 18 / 54 18. What is the name of the chest bone? (a) Vertebra (b) Clavicle (c) Sternum (d) Scapula 📘 Explanation: The sternum is a flat bone located in the center of the chest. 📘 Explanation: The sternum is a flat bone located in the center of the chest. 19 / 54 19. Which of the following is NOT correct? (a) Cervical vertebra – 7 (b) Thoracic vertebra – 12 (c) Lumbar vertebra – 5 (d) Sacrum vertebra – 3 📘 Explanation: The sacrum is made of 5 fused vertebrae, not 3. 📘 Explanation: The sacrum is made of 5 fused vertebrae, not 3. 20 / 54 20. What is the first vertebra (C1) that connects to the occipital condyle called? (a) Atlas (b) Craniovertebral (c) Epistropheus (d) Foramen � Explanation: The atlas (C1) vertebra supports the skull and articulates with the occipital condyle. � Explanation: The atlas (C1) vertebra supports the skull and articulates with the occipital condyle. 21 / 54 21. Consider the following statements: 1. The largest and strongest bone of the human body is the femur (thigh bone). 2. The smallest bone is the stapes, found in the middle ear. ✅ Answer: (d) Both 1 and 2 📘 Explanation: Both statements are correct. Femur = longest, stapes = smallest. 22 / 54 22. Which organ is mainly responsible for blood cell production? ✅ Answer: Bone marrow 📘 Explanation: Bone marrow is the soft tissue inside bones that produces red and white blood cells. 23 / 54 23. Where are the clavicle and scapula bones located? (a) Elbow (b) Shoulder joint (c) Knee joint (d) Both A and B 📘 Explanation: The clavicle (collarbone) and scapula (shoulder blade) form part of the shoulder girdle. 📘 Explanation: The clavicle (collarbone) and scapula (shoulder blade) form part of the shoulder girdle. 24 / 54 24. What is the length of the longest bone (femur) in the human body? (a) 32 cm (b) 48 cm (c) 52 cm (d) 120 cm 📘 Explanation: The femur is the longest bone, approximately 52 cm in adult males. 📘 Explanation: The femur is the longest bone, approximately 52 cm in adult males. 25 / 54 25. Where is the tibia or shin bone found? (a) Arm (b) Hand (palm) (c) Leg (d) Shoulder 📘 Explanation: The tibia is the large bone in the lower leg (shin bone). 📘 Explanation: The tibia is the large bone in the lower leg (shin bone). 26 / 54 26. At the time of birth, which part of the body has fully developed bones?c (a) Hands (b) Neck (c) Head (d) Legs 📘 Explanation: At birth, the bones of the skull are better developed to protect the brain, though they are not fully fused. 📘 Explanation: At birth, the bones of the skull are better developed to protect the brain, though they are not fully fused. 27 / 54 27. Which of the following is NOT a part of the appendicular skeleton? (a) Human arm and leg bones (b) Pelvic and pectoral girdle (c) Vertebral column and skull (d) Hands and feet 📘 Explanation: These are part of the axial skeleton, not appendicular. 📘 Explanation: These are part of the axial skeleton, not appendicular. 28 / 54 28. Where are phalanges (finger/toe bones) found? (a) Only in fingers (b) Only in toes (c) In both fingers and toes (d) Not in any 📘 Explanation: Phalanges are bones in both fingers and toes. 📘 Explanation: Phalanges are bones in both fingers and toes. 29 / 54 29. What is the name of the flat bone that forms the front part of the knee cap? (a) Femur (b) Scapula (c) Sternum (d) Patella 📘 Explanation: The patella is the knee cap, protecting the front of the knee joint. 30 / 54 30. Where is more cartilage found in the body? (a) Larynx (b) External ear (c) Tip of nose (d) All of these 📘 Explanation: All of these parts contain cartilage for flexibility. 📘 Explanation: All of these parts contain cartilage for flexibility. 31 / 54 31. Which of the following is not part of the axial skeleton? (a) Shoulder girdle (b) Vertebral column (c) Skull (d) Thoracic cage 📘 Explanation: The shoulder girdle is part of the appendicular skeleton. 📘 Explanation: The shoulder girdle is part of the appendicular skeleton. 32 / 54 32. How many bones are there in the axial skeleton? (a) 120 (b) 80 (c) 40 (d) 56 📘 Explanation: The axial skeleton has 80 bones, including skull, vertebrae, and rib cage. 📘 Explanation: The axial skeleton has 80 bones, including skull, vertebrae, and rib cage. 33 / 54 33. What is the main reason for bone weakness in old age? ✅ Answer: Calcium and vitamin D deficiency 📘 Explanation: Lack of calcium and vitamin D leads to conditions like osteoporosis, causing bone weakening. 34 / 54 34. How many bones are present in the forelimbs (arms) and hindlimbs (legs)? (a) 90 (b) 120 (c) 118 (d) 204 📘 Explanation: Each limb has 30 bones → 30 × 4 (2 arms + 2 legs) = 120 bones in total. 📘 Explanation: Each limb has 30 bones → 30 × 4 (2 arms + 2 legs) = 120 bones in total. 35 / 54 35. The bones in the human legs are – (a) Hollow (b) Porous (c) Solid (d) Compact 📘 Explanation: Leg bones are compact and dense to support body weight and movement. 📘 Explanation: Leg bones are compact and dense to support body weight and movement. 36 / 54 36. How many bones are there in the appendicular skeleton of a human? (a) 80 (b) 120 (c) 126 (d) 206 📘 Explanation: The appendicular skeleton includes arms, legs, pelvic and shoulder girdles – totaling 126 bones. 📘 Explanation: The appendicular skeleton includes arms, legs, pelvic and shoulder girdles – totaling 126 bones. 37 / 54 37. Which vitamin is required for proper bone development? (a) Vitamin A (b) Vitamin B (c) Vitamin C (d) Vitamin D 📘 Explanation: Vitamin D helps in calcium absorption, essential for bone strength and development. 📘 Explanation: Vitamin D helps in calcium absorption, essential for bone strength and development. 38 / 54 38. Which disease is more likely caused by calcium and vitamin D deficiency? ✅ Answer: Rickets 📘 Explanation: Rickets leads to soft and weak bones, commonly in children due to vitamin D/calcium deficiency. 39 / 54 39. Which condition is caused by an autoimmune reaction affecting joints? (a) Osteomalacia (b) Osteoarthritis (c) Arthritis (d) Rheumatoid arthritis 📘 Explanation: Rheumatoid arthritis is an autoimmune disease that causes inflammation in joints. 📘 Explanation: Rheumatoid arthritis is an autoimmune disease that causes inflammation in joints. 40 / 54 40. How many bones are there in the neck (cervical) region? (a) 1 (b) 2 (c) 3 (d) 7 📘 Explanation: The cervical spine consists of 7 vertebrae (C1 to C7). 📘 Explanation: The cervical spine consists of 7 vertebrae (C1 to C7). 41 / 54 41. What kind of joint is found between vertebrae? (a) Immovable joint (b) Slightly movable joint (c) Fixed joint (d) Freely movable joint 📘 Explanation: Vertebrae are connected by slightly movable joints allowing flexibility. 📘 Explanation: Vertebrae are connected by slightly movable joints allowing flexibility. 42 / 54 42. What type of joint is the elbow and knee joint? (a) Ball and Socket Joint (b) Gliding Joint (c) Hinge Joint (d) Pivot Joint 📘 Explanation: Elbow and knee are hinge joints that move in one plane (like a door hinge). 📘 Explanation: Elbow and knee are hinge joints that move in one plane (like a door hinge). 43 / 54 44. Which bone in the pelvic girdle joins the ilium, ischium, and pubis and connects to the femur? (a) Pubis (b) Ilium (c) Acetabulum (d) Collarbone 📘 Explanation: The acetabulum is the hip socket that connects to the femur. 📘 Explanation: The acetabulum is the hip socket that connects to the femur. 44 / 54 43. Which of the following is NOT a bone of the forelimb? (a) Humerus (b) Radius (c) Ulna (d) Femur 📘 Explanation: Femur is part of the hindlimb (thigh bone), not forelimb. 📘 Explanation: Femur is part of the hindlimb (thigh bone), not forelimb. 45 / 54 45. What type of joint is found in the wrist (carpus) and ankle? (a) Ball and Socket (b) Gliding (c) Hinge (d) Pivot 📘 Explanation: Wrist and ankle joints are gliding joints, allowing sliding movements. 📘 Explanation: Wrist and ankle joints are gliding joints, allowing sliding movements. 46 / 54 46. The ribs are connected to the sternum through – (a) Sternum (b) Cartilage (c) Clavicle (d) Spine 📘 Explanation: The true ribs attach to the sternum via costal cartilage. 📘 Explanation: The true ribs attach to the sternum via costal cartilage. 47 / 54 47. Which part of the skeleton includes the ribs? (a) Axial skeleton (b) Appendicular skeleton (c) Both 1 and 2 (d) None 📘 Explanation: Ribs are part of the axial skeleton, which also includes skull and spine. 📘 Explanation: Ribs are part of the axial skeleton, which also includes skull and spine. 48 / 54 48. How many bones are found in the forelimbs? (a) 30 (b) 60 (c) 120 (d) 130 📘 Explanation: One forelimb = 30 bones, so two = 60 bones. 📘 Explanation: One forelimb = 30 bones, so two = 60 bones. 49 / 54 49. Consider the following statements: 1. The upper limb is connected to the axial skeleton via the pectoral girdle. 2. The lower limb is connected to the axial skeleton via the pelvic girdle. ✅ Answer: (d) Both 1 and 2 📘 Explanation: Both statements are correct. Pectoral girdle → arm, Pelvic girdle → leg. 50 / 54 50. How many pairs of ribs are called false ribs? (a) 8th to 9th pairs (b) 7th to 8th pairs (c) 8th to 10th pairs (d) 11th to 12th pairs 📘 Explanation: False ribs = 8th to 10th pairs; they are indirectly attached to the sternum. 📘 Explanation: False ribs = 8th to 10th pairs; they are indirectly attached to the sternum. 51 / 54 51. What is the study of the shape and structure of living things called? (a) Morphology (b) Anatomy (c) Histology (d) Floriculture 📘 Explanation: Morphology deals with external form and structure of organisms. 📘 Explanation: Morphology deals with external form and structure of organisms. 52 / 54 1. What is the part of the plant that remains underground called? (a) Root system Explanation: The underground part of the plant that absorbs water and anchors the plant is called the root system. 53 / 54 2. What is the part of the plant that remains above the ground called? Answer: (b) Shoot system Explanation: The shoot system includes stems, leaves, flowers, and fruits — the aerial parts of the plant. 54 / 54 Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Some Question remains Your score isThe average score is 0% 0% Restart quiz Uncategorized
