Question

In children, the bones are more flexible and brittle because their bones have
A. A large number of salts and little organic substances
B. A large number of organic substances and little salts
C. Well-developed Haversian system
D. A large number of osteoblasts

Answer 1

Hint: One can define the term flexibility as the capacity of a joint or arrangement of joints to travel through an unhindered and torment unfenced of movement. Even though flexibility shifts broadly from individual to individual, it is said that the least ranges are vital for keeping up joint and total body wellbeing. Similarly, the adaptability to inordinate can be as terrible as insufficient because both can increase your danger of injury.

Complete answer:
Made generally of collagen, bone is living, developing tissue. Collagen is a protein that gives a delicate structure, and calcium phosphate is a mineral that includes quality and solidifies the system. This blend of collagen and calcium makes bone dependable and flexible enough to withstand pressure.
A grown-up's bones are more demanding, more fragile, and bound to break than twist. A kid's bones are more adaptable because their compound arrangement is not the same as that of grown-up bones.
As you age, your body may absorb calcium and phosphate from your bones while keeping these minerals in your bones. This makes your bones more vulnerable. At the point when this cycle arrives at a specific stage, it is called osteoporosis. Commonly, an individual will crack a bone before they even realize they have bone loss. Salt is a central point in controlling the measure of calcium in the pee and is lost from the bones. Since calcium is significant for bone quality, an excess of salt can prompt bone debilitating and accordingly osteoporosis.

Hence, the correct answer is option (B).

Additional information:
As we age, our bones contain a large number of salts and little organic substances which lead to thin bones and osteoporosis. The Haversian framework is a minute cylinder or passage in the cortical bone that houses nerve filaments and a couple of vessels. This permits unresolved issue oxygen and sustenance without being profoundly vascular. These channels additionally speak with bone cells utilizing exceptional associations, or canaliculi. If we have an enormous number of osteoblasts, this implies there is more bone ingestion than ordinary. The osteoblasts attempt to keep up by making new bone, yet they overcompensate and make disordered overabundance bone.

Note: Bones are composed of calcium, protein collagen, phosphorus, sodium, and different minerals. Calcium makes the bones hard to help body weight. The admission of nutrients and minerals, particularly nutrient D and calcium legitimately influences the capacity level of calcium during the bones. Salt assists with controlling the calcium levels in the bone; however, an excess of salt is unsafe as it prompts bone depletion. The pediatric bones are more adaptable and less weak in light of its low thickness.