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Bones Video Lecture | Science for Grade 6
FAQs on Bones Video Lecture - Science for Grade 6
| 1. What are bones made of? |  |
Ans. Bones are made of a combination of collagen fibers and minerals, such as calcium and phosphorus. This combination gives bones their strength and hardness.
| 2. How many bones are in the human body? | |
Ans. The human body has a total of 206 bones. These bones are divided into two main categories: axial skeleton (including the skull, spine, and ribcage) and appendicular skeleton (including the bones of the arms, legs, hands, and feet).
| 3. What is the function of bones in the body? | |
Ans. Bones have several important functions in the body. They provide support and structure to the body, protect vital organs, enable movement through the attachment of muscles, store minerals such as calcium, and produce red and white blood cells in the bone marrow.
| 4. How do bones grow and develop? | |
Ans. Bones grow and develop through a process called ossification. In this process, specialized cells called osteoblasts produce new bone tissue, while other cells called osteoclasts break down and remodel existing bone. Ossification occurs throughout childhood and adolescence, with bones reaching their full size and density by early adulthood.
| 5. What factors can affect bone health? | |
Ans. Several factors can influence bone health. Adequate nutrition, particularly the intake of calcium and vitamin D, is important for maintaining healthy bones. Regular weight-bearing exercise, such as walking or weightlifting, helps strengthen bones. Hormonal factors, such as estrogen levels in women and testosterone levels in men, also play a role in bone health. Additionally, certain medical conditions, medications, and lifestyle choices, such as smoking and excessive alcohol consumption, can negatively impact bone health.
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Video Description: Bones for Grade 6 2025 is part of Science for Grade 6 preparation.
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