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The Skeletal System Video Lecture - Class 5

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1. What is the skeletal system?
Ans. The skeletal system is a framework of bones, cartilage, and ligaments that provides support, protection, and movement to the human body. It is made up of 206 bones in adults and plays a crucial role in maintaining the body's shape and structure.
2. How does the skeletal system protect the body?
Ans. The skeletal system protects vital organs and tissues. For example, the skull protects the brain, the ribcage shields the heart and lungs, and the spine safeguards the spinal cord. Additionally, bones act as a protective barrier for bone marrow, which produces blood cells.
3. What is the role of cartilage in the skeletal system?
Ans. Cartilage is a flexible connective tissue found in the skeletal system. It acts as a cushion between bones, reducing friction and allowing smooth movement at joints. Cartilage also helps in the growth and development of bones, particularly during childhood.
4. How does the skeletal system assist in movement?
Ans. The skeletal system works in conjunction with muscles to allow movement. Muscles attach to bones via tendons and contract, causing the bones to move. Joints, which are formed where two or more bones meet, enable the bones to articulate and facilitate various types of movement.
5. How does the skeletal system support the body?
Ans. The skeletal system provides structural support to the body, allowing us to stand upright and maintain posture. It also supports the weight of our muscles and organs, preventing them from collapsing. The bones of the legs, for instance, act as pillars, supporting the weight of the upper body while standing or walking.
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