The Breathing System (LC 2027) (Leaving Cert Biology): Quizzes
📚Quizzes
Practise the questions
14 questions from this quiz
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Practise the questions
14 questions from this quiz
What are the two main gases exchanged by the breathing system?
What are the two main gases exchanged by the breathing system?
Oxygen and carbon dioxide
What is the difference between anatomy and physiology?
What is the difference between anatomy and physiology?
Anatomy = structure; physiology = function
What separates the thoracic cavity from the abdominal cavity?
What separates the thoracic cavity from the abdominal cavity?
Diaphragm
What is the cartilage that separates the two nostrils called?
What is the cartilage that separates the two nostrils called?
Septum
What is the function of the epiglottis?
What is the function of the epiglottis?
Covers trachea when swallowing
Where are the vocal cords located?
Where are the vocal cords located?
Larynx
Why does the trachea contain rings of cartilage?
Why does the trachea contain rings of cartilage?
Prevents collapse during breathing
What structural feature do bronchioles lack that bronchi have?
What structural feature do bronchioles lack that bronchi have?
Cartilage
What is the combined function of mucus and cilia in the respiratory system?
What is the combined function of mucus and cilia in the respiratory system?
Trap particles and move them upward
Why are alveolar walls only one cell thick?
Why are alveolar walls only one cell thick?
Allows gases to pass through easily
How is most oxygen transported in the blood?
How is most oxygen transported in the blood?
Combined with haemoglobin
What type of process is inhalation compared to exhalation?
What type of process is inhalation compared to exhalation?
Active; exhalation is passive
What percentage of carbon dioxide is in exhaled air?
What percentage of carbon dioxide is in exhaled air?
4.4%
What does the medulla oblongata monitor to control breathing rate?
What does the medulla oblongata monitor to control breathing rate?
Carbon dioxide levels