## Chapter Chosen

Locomotion and Movement

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CBSE Gujarat Board Haryana Board

## Previous Year Papers

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Class 10 Class 12

How are the thick and thin filaments arranged ?

Thin or Actin filaments :

The light bands contain actin and is called I-band or Isotropic band, whereas the dark band called ‘A’ or Anisotropic band contains myosin.  Actin filaments are thinner and are called thin filaments. The myosin filaments are called thick filament. The thick filaments in the ‘A’ band are also held together in the middle of this band by a thin fibrous membrane called ‘M’ line. The ‘A’ and ‘I’ bands are arranged alternately throughout the length of the myofibrils.

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What is gout ?

Gout is the inflammation of joints due to accumulation of uric acid crystals.
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Total number of pair of ribs?

12
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how many pairs of floating ribs are present in humns?

2
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Which pairs are called false ribs?

8th, 9th and 10th pairs of ribs are called as false ribs or vertebrondral ribs.
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What is the rib cage made of ?

The thoracic vertebrae, ribs and sternum together form the rib cage.
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