40. What is cartilage ? Name some of our body parts where cartilage is found. 41. Which material is present at the end of bones in a joint ? How does it help? 42 Name two hinge joints and two ball and socket joints in our body. Where can you find fixed 43. Explain why, we cannot bend our arm if a light wooden plank is tied to it. human skeleton ?
Answers
Your Solution:
40) Cartilage is a soft, thin, elastic and flexible connective tissue that protects the bone from rubbing against each other which is mainly found in the external ear, larynx, respiratory tract and the articulating surface of the joints.
41) The end of bone joints is covered by fibrous connective tissues known as cartilage. Cartilage is fibrous rubbery connective tissues that cover the end of bones in joints and prevent the bones from wearing out. The cartilage protects the bones from friction that would cause wearing out due to the rubbing against each other.
42) The hinge joint includes ankle, elbow, knee and interphalangeal joints. The hip joint and the shoulder joint are two ball and socket joints in our body.
43) We can not band arm if a light wooden plank is tied to it because the movement of our elbow joint is get tight and will not get a moment it will become straight bone.
I hope you got it.
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