Structure of the Human Gas Exchange System (AQA A-Level Biology): Quizzes
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Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
Why do mammals need specialised gas exchange systems?
Why do mammals need specialised gas exchange systems?
Large size & high metabolic rates
What is the correct sequence of air flow in the human gas exchange system?
What is the correct sequence of air flow in the human gas exchange system?
Trachea→Bronchi→Bronchioles→Alveoli
What are the functions of the nasal cavity?
What are the functions of the nasal cavity?
Warms, filters & moistens air
Why does the trachea have C-shaped rings of cartilage?
Why does the trachea have C-shaped rings of cartilage?
Prevent collapse during inhalation
What is the role of ciliated epithelium in the trachea?
What is the role of ciliated epithelium in the trachea?
Sweeps mucus upwards
Why are lungs positioned inside the body?
Why are lungs positioned inside the body?
Air can't support them & prevents H2O loss
What is a key structural feature of bronchioles?
What is a key structural feature of bronchioles?
Muscle walls, no cartilage in smallest
What is the diameter range of alveoli?
What is the diameter range of alveoli?
What happens to alveoli during expiration?
What happens to alveoli during expiration?
Elastic recoil expels CO2-rich air
What surrounds each alveolus to transport gases?
What surrounds each alveolus to transport gases?
Extensive capillary networks