answer these questions of class 9th of physical education
Answers
Answer:
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Explanation:
1.study of the structure or internal workings of something.Cervical spine
2.The human skeleton performs six major functions; support, movement, protection, production of blood cells, storage of minerals, and endocrine regulation.
3.A joint is defined as a connection between two bones in the skeletal system. Joints can be classified by the type of the tissue present (fibrous, cartilaginous or synovial), or by the degree of movement permitted (synarthrosis, amphiarthrosis or diarthrosis).
4.Ball and socket joints also allow types of movement called abduction, adduction, rotation and circumduction. Abduction – movement away from the midline of the body. This occurs at the hip and shoulder joints during a jumping jack movement. Adduction – movement towards the midline of the body.
5.Stronger Joints
Your joints connect bones together, allowing you to move fluidly and flexibly with the help of your muscles. Regular exercise allows you to maintain healthy joints, and stop them from going stiff.