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प्रश्न
Bones are hard structures and cannot be bent. But, we can still bend our elbow, knee, etc. How is this possible?
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उत्तर
A single bone can not be bent from any of its parts but if two bones are joined to each other through a joint then we may be able to move that set of bones accordingly. Such as the hinge joint, pivotal joint, ball and socket joint and the pelvic joint.
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संबंधित प्रश्न
Name the longest and the smallest bone of the human body.
What are the various parts of a typical vertebra?
Describe the bones of vertebral column.
What are the five regions of the vertebral column?
What is the importance of pectoral and pelvic girdle?
The diagram below represents the forelimb of man.
(a) Label the parts marked 1 to 9.
(b) Mention the antagonistic muscles.
(c) Which muscle will contract when the hand is bent?
(d} Name the main bone of pectoral girdle.
(e) Name the type of joint present in shoulder girdle.
The question has four options. Choose the correct answer:
How many ribs are found in man?
Answer the following question in your words.
Which are the various reasons due to which our bones might break?
The forearm has two bones.
How many muscles work together to move a bone?
