The Respiratory System (Junior Cert Science): Quizzes
📚Quizzes
Practise the questions
10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the difference between respiration and breathing?
What is the difference between respiration and breathing?
Respiration is in cells; breathing is air movement
What is the function of the small hairs inside your nose?
What is the function of the small hairs inside your nose?
They filter and trap dust and dirt particles
Why does the trachea have rings of cartilage around it?
Why does the trachea have rings of cartilage around it?
To keep it open and prevent it collapsing
Which feature makes alveoli well-adapted for gas exchange?
Which feature makes alveoli well-adapted for gas exchange?
Very thin walls, one cell thick
What happens to the diaphragm during inhalation?
What happens to the diaphragm during inhalation?
It contracts and flattens, moving downward
What happens to pressure in your lungs during exhalation?
What happens to pressure in your lungs during exhalation?
It increases, forcing air out
What is diffusion?
What is diffusion?
Movement from high to low concentration
What is the percentage of oxygen in exhaled air?
What is the percentage of oxygen in exhaled air?
What does limewater do when carbon dioxide passes through it?
What does limewater do when carbon dioxide passes through it?
It turns milky
What is the function of the epiglottis?
What is the function of the epiglottis?
Closes over trachea to prevent food entry