SCIENCE
SKELETAL SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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your bones stay the same
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your bones get smaller
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your bones don’t need calcium when you’re a grown up
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your bones grow and change too
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Detailed explanation-1: -As you grow, the cartilage in your bones grows. Over time, it slowly gets replaced by bone with the help of calcium. This process is called ossification. During ossification, layer upon layer of calcium and phosphate salts begin to accumulate on cartilage cells.
Detailed explanation-2: -Bones become more brittle and may break more easily. Overall height decreases, mainly because the trunk and spine shorten. Breakdown of the joints may lead to inflammation, pain, stiffness, and deformity.
Detailed explanation-3: -Even though bones stop growing in length in early adulthood, they can continue to increase in thickness or diameter throughout life in response to stress from increased muscle activity or to weight. The increase in diameter is called appositional growth.
Detailed explanation-4: -At birth, the ends of the long bones are mainly cartilage, with centers of bone beginning to form inside. As a child grows, the shafts get longer, and bone gradually replaces the cartilage epiphyses. Through the growing years, a layer of cartilage (the growth plate) separates each epiphyses from the bone shaft.