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Respiration in Organisms — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceRespiration in Organisms1 Mark
MCQ
During the process of exhalation, the ribs move
  • ✓
    Down and inwards
  • B
    Up and inwards
  • C
    Down and outwards
  • D
    Up and outwards
✓

Answer

Correct option: A.
Down and inwards
During exhalation, ribs moves down and inwards, while diaphragm move upwards and relaxes.
This reduces the size of the chest cavity and air is pushed out of the lungs.

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