Organisation: The Cardiovascular & Respiratory System (OCR GCSE Biology A, Combined (Gateway Science Suite)): Quizzes
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Practise the questions
13 questions from this quiz
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Practise the questions
13 questions from this quiz
Where in the body are the lungs located?
Where in the body are the lungs located?
In the thorax
What is the main function of the trachea?
What is the main function of the trachea?
To move air from mouth and nose to lungs
What is the role of the intercostal muscles?
What is the role of the intercostal muscles?
Ventilating lungs by moving the ribcage
Where does gas exchange occur in the respiratory system?
Where does gas exchange occur in the respiratory system?
In the alveoli
What happens to the diaphragm during inhalation?
What happens to the diaphragm during inhalation?
It contracts and moves down
What happens to the volume of the chest cavity during inhalation?
What happens to the volume of the chest cavity during inhalation?
It increases
What happens to the pressure inside the chest during inhalation?
What happens to the pressure inside the chest during inhalation?
It decreases
How does the ribcage move during exhalation?
How does the ribcage move during exhalation?
Down and in
What happens to pressure inside the chest during exhalation?
What happens to pressure inside the chest during exhalation?
It increases
How does oxygen move from alveoli into the blood?
How does oxygen move from alveoli into the blood?
It diffuses down its concentration gradient
How does carbon dioxide leave the blood?
How does carbon dioxide leave the blood?
It diffuses down its concentration gradient
How do thin alveoli walls help gas exchange?
How do thin alveoli walls help gas exchange?
They create a short diffusion pathway
How is breathing rate calculated?
How is breathing rate calculated?
Breaths taken minutes