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प्रश्न
Answer briefly the following:
Why do our body cells require oxygen?
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उत्तर
Body cells require oxygen for the break down of glucose and release energy for carrying out various life functions.
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संबंधित प्रश्न
Under what conditions would the breathing rate increase?
Put a tick (✓) against the most appropriate alternative in the following statement.
The process during which food is oxidised and energy is released is called
Answer briefly the following:
Name the agency which transports oxygen to all parts of the body.
Define respiration.
Name the following:
No breathing.
Alveoli provide the surface area for exchange of ______.
The pharynx opens into trachea through an opening called ______ guarded by a cartilaginous flap called ______.
The lungs are covered by a double-layered ______.
Arrange in the correct sequence
Trachea → Bronchi → Pharynx → Lungs → Larynx → Nasal cavity → Nostrils → Bronchiole → Alveolus
A fluid filled double membranous layer surrounds the lungs. Name it and mention its important function.
