MCQ
The structures participating in the inhalation are:
- ADiaphragm and internal intercostal muscles
- BDiaphragm and external intercostal muscles
- CAbdominal muscles and intercostal muscles
- DAll of the above
Explanation:
During inhalation, the external intercostal muscles and diaphragm contract simultaneously. This causes the thorax to expand and inflates the lungs by creating a negative pressure inside the thoracic cavity. When inspiratory muscles contract, the diaphragm will descend and external intercostals will raise the rib cage.
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Reason : Centrosome usually contains two cylindrical structures called centrioles
$I$.In racemose inflorescence, the flowers are brone in a basipetal order:
$II$.Epigynous flowers are seen in rose plant. $III$.In brinjal, the ovary is superior:
Of these statements