Question

Яку роль в кістках виконують органічні та неорганічні речовини ?​

Answer 1

Ответ:

Органічні речовини надають гнучкості та пружності

Перевірка Якщо кістку покласти на добу у 10 % -й розчин соляної кислоти, то її мінеральні речовини розчиняться, а вона стане гнучкою і пружною, її можна буде зав'язати у вузол.

Неорганічні речовини надають твердості та міцності

Перевірка Коли кістку повільно прожарювати на вогні, вода з неї випарується, органічні речовини згорять, і кістка стане дуже крихкою.

Объяснение:

Answer 2

The Role of Organic and Inorganic Substances in Bones

Bones play a crucial role in the human body, providing structural support, protecting vital organs, and facilitating movement. The composition of bones involves a combination of organic and inorganic substances.

Organic Substances in Bones: Organic substances in bones primarily consist of collagen, a fibrous protein that provides flexibility and tensile strength. Collagen makes up approximately 90% of the organic component of bone tissue It forms a framework that gives bones their structure and resilience.

Inorganic Substances in Bones: Inorganic substances in bones mainly include calcium phosphate, which is primarily present in the form of hydroxyapatite crystals. These crystals contribute to the hardness and rigidity of bones. Calcium phosphate accounts for about 70% of the bone's weight and provides the necessary mineralization for bone strength.

Interaction between Organic and Inorganic Substances: The interaction between organic and inorganic substances in bones is essential for their overall function. Collagen fibers provide flexibility and resistance to tensile forces, while hydroxyapatite crystals provide rigidity and resistance to compressive forces. This combination of flexibility and rigidity allows bones to withstand various stresses and strains encountered during daily activities.

Bone Remodeling: Bone is a dynamic tissue that undergoes constant remodeling throughout life. This process involves the removal of old or damaged bone tissue (resorption) and the formation of new bone tissue (ossification). Organic and inorganic substances play a crucial role in bone remodeling.

During bone resorption, specialized cells called osteoclasts break down old bone tissue, releasing calcium and other minerals into the bloodstream. These minerals can then be utilized by other parts of the body for various physiological processes.

In the subsequent phase of bone formation, osteoblasts deposit new bone tissue by synthesizing collagen and facilitating the mineralization of the bone matrix with calcium phosphate. This process ensures the continuous renewal and repair of bone tissue.

Conclusion: In summary, both organic and inorganic substances contribute to the structure and function of bones. Collagen provides flexibility and tensile strength, while hydroxyapatite crystals contribute to the hardness and rigidity of bones. The interaction between these substances allows bones to withstand mechanical stresses and strains. Additionally, the constant remodeling of bone tissue ensures its continuous renewal and repair.