Biology · General Awareness
Skeletal and Muscular System
1,141 Questions
The skeletal and muscular system is a core topic in human biology. It covers the structure and function of bones, joints, and muscles. These concepts frequently appear in general science sections of various competitive exams. Master this topic to score higher.
Types of jointsHuman body bonesSkeletal fracturesMuscle anatomy
Skeletal and Muscular System Questions
A
Correct answer
Explanation
The thigh bone (femur) is stronger than concrete pound-for-pound due to its dense cortical bone structure. It can withstand considerable pressure. Teeth are not bones (enamel/dentin), and while the skull is tough, it's not comparable to femur strength.
B
Correct answer
Explanation
The adult human skeleton contains 206 named bones, consisting of 80 axial skeleton bones (skull, vertebral column, thoracic cage) and 126 appendicular skeleton bones (limbs and girdles). Infants have more bones (around 270) which fuse together during growth and development to reach the adult count.
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Fibula
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Ulna
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Femur
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Sternum
C
Correct answer
Explanation
The femur (thigh bone) is the longest and strongest bone in the human body, extending from the hip to the knee. The fibula is a thinner bone in the lower leg, the ulna is in the forearm, and the sternum is the breastbone - all much shorter.
C
Correct answer
Explanation
The tibia (shin bone) is found in the leg - it's the larger of the two lower leg bones connecting the knee to the ankle. The skull contains cranial and facial bones, the arm contains humerus, radius and ulna, and the face has various smaller bones. The tibia is exclusively a leg bone.
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The arm
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The leg
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The spine
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The hand
B
Correct answer
Explanation
The tibia, also called the shinbone, is the larger and stronger of the two bones in the lower leg between the knee and ankle. It bears most of the body's weight. The arm contains radius and ulna, not tibia.
A
Correct answer
Explanation
The human ear contains three tiny bones called ossicles - the malleus (hammer), incus (anvil), and stapes (stirrup). These are the smallest bones in the human body and transmit sound vibrations from the eardrum to the inner ear. The presence of these bones is essential for proper hearing function.
B
Correct answer
Explanation
The adult human body typically contains 206 bones. This includes the axial skeleton (skull, spine, ribs, sternum) and the appendicular skeleton (limbs and girdles). Babies are born with around 270 bones, which fuse together as they grow.
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Homogenous matrix
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Protein chondrin
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Flexible cartilage
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Less calcium
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Numerous fine branches in cavities called canaliculi
E
Correct answer
Explanation
The canaliculi are absent.
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cancellous
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compact
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dense
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none of these
A
Correct answer
Explanation
The inter radicular and apical bones are cancellous in nature.
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ledging
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crater
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lipping
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none of these
C
Correct answer
Explanation
When bone is resorbed by excessive occlusal forces, the body attempts to reinforce the thin bony trabeculae with new bone. This process is called buttressing or lipping.
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Ewing sarcoma
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Synovial sarcoma
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Desmoplastic fibroma
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Desmoplastic small-round-cell tumor
B
Correct answer
Explanation
It is a unique form of cancer which generally occurs near to the joints of the arm, neck or leg.
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between menisci at anterior ends
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between menisci at posterior ends
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between menisci & tibial condyle
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between menisci & femoral condyle
C
Correct answer
Explanation
Coronary ligament lies between menisci and tibial condyle.
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transverse metatarsal
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deep transverse metacarpal
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dorsal radioulnar
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dorsal radiocarpal
A
Correct answer
Explanation
The transverse metatarsal ligament is a narrow band, which runs across and connects together the heads of all the metatarsal bones.
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triquetral bone
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pisiform
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lunate bone
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trapezoid bone
B
Correct answer
Explanation
The pisiform bone is a small, knobbly, pea-shaped wrist bone.