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प्रश्न
Which of the following parts of our body help us in movement?
- Bones
- Skin
- Muscles
- Organs
Choose the correct answer from the options below.
पर्याय
(i) and (iii)
(ii) and (iv)
(i) and (iv)
(iii) and (ii)
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उत्तर
(i) and (iii)
Explanation:
Bones form the structural framework of body called skeleton. The skeleton along with muscles, helps our body parts to move. Muscles are like elastic bands which are attached to the bones by means of tough connecting bands called tendons. The muscles move the bones by their pull. Muscles cannot push. Therefore, to move the bone in one direction, at least two sets of muscles are required. A pair of two types of muscles help the bone to move. One of them contracts and becomes shorter, stiffer and thicker. This pulls the bone in one direction. The other muscle of the pair relaxes when one contracts. To move the bone in the opposite direction, the relaxed muscle contracts itself and brings the bone back to its original position. This time, the first muscle is relaxed.
संबंधित प्रश्न
What will happen if instead of 33 vertebrae in our body, we had one single and straight bone?
Which one of the following categories of vertebrae are correctly numbered?
Axil skeleton in human consists of ______, ______, ______ and _______.
Pelvic girdle is a part of axial skeleton.
Differentiate axial and appendicular skeleton.
Differentiate between the following.
Endoskeleton and Exoskleton
______ is the largest and strongest bone in the human face.
The adult human skeletal system consists of ______ bones.
______ help in connecting bone to bone.
Vertebral column is formed by a number of serially arranged small bones called ______.
The lower jaw bone is the smallest and strongest bone in the human face.
Analogy:
Skull protects: Brain.
The rib cage protects: ______.
Axial skeleton – Explain.
Which of the following joints is immovable?
