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The Human Skeletal System Video Lecture | Science Olympiad for Class 5
FAQs on The Human Skeletal System Video Lecture - Science Olympiad for Class 5
| 1. What are the main functions of the human skeletal system? |  |
Ans. The human skeletal system has several important functions. It provides support to the body, allowing us to maintain an upright posture. It also protects vital organs such as the brain, heart, and lungs. Additionally, the skeletal system enables movement by providing attachment points for muscles and acting as levers. It also produces blood cells in the bone marrow and stores essential minerals like calcium and phosphorus.
| 2. How many bones are there in the human skeletal system? | |
Ans. The human skeletal system consists of 206 bones. These bones are categorized into two main types: axial bones and appendicular bones. The axial skeleton includes the skull, vertebral column, and ribcage, while the appendicular skeleton comprises the bones of the limbs, shoulder girdle, and pelvic girdle.
| 3. Can bones grow and change over time? | |
Ans. Yes, bones can grow and change over time. During childhood and adolescence, a process called bone growth occurs. This is facilitated by specialized cells called osteoblasts, which produce new bone tissue. As we age, bones also undergo remodeling, where old bone tissue is broken down by cells called osteoclasts and replaced with new bone tissue. Factors such as nutrition, physical activity, and hormonal changes can influence bone growth and remodeling.
| 4. How do fractures affect the skeletal system? | |
Ans. Fractures are breaks in bones that can have various effects on the skeletal system. Depending on the severity and location of the fracture, it can cause pain, swelling, and difficulty in movement. Fractures may require medical intervention, such as casting, splinting, or surgery, to properly heal. In some cases, fractures can lead to long-term complications, such as impaired mobility or arthritis.
| 5. What are some common skeletal disorders? | |
Ans. There are several common skeletal disorders that can affect the human skeletal system. Some examples include osteoporosis, a condition characterized by weakened and brittle bones; scoliosis, an abnormal curvature of the spine; arthritis, a joint inflammation that can cause pain and stiffness; and osteoarthritis, a degenerative joint disease. Other disorders include fractures, osteomyelitis (bone infection), and osteogenesis imperfecta (brittle bone disease). Proper medical care and lifestyle choices can help manage and prevent these disorders.
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