Font size
WorksheetsRespiratory System
Total questions: 21
Worksheet time: 13mins
Where is the nasal cavity located?
In the lungs
Behind the trachea
Inside the mouth
Inside the nose
What is the primary function of the epiglottis?
To filter the air
To prevent food from entering the trachea
To assist in sound production
To exchange gases
The pharynx is part of which body system?
Digestive system
Nervous system
Respiratory system
Circulatory system
Which structure is also known as the voice box?
Trachea
Bronchus
Larynx
Epiglottis
What is the main function of the trachea?
To humidify air
To produce sound
To transport air to the lungs
To exchange gases
How many primary bronchi does the respiratory system have?
One
Two
Three
Four
Which of the following are the smallest air passages in the respiratory system?
Bronchi
Bronchioles
How many lobes are present in the right lung?
One
Two
Three
Four
Where does the actual exchange of gases occur in the respiratory system?
Trachea
Bronchi
Alveoli
Larynx
What is the primary role of the diaphragm?
To filter air
To help in gas exchange
To contract and relax during breathing
To humidify air
What does the thoracic cavity contain?
The brain and spinal cord
The heart and lungs
The stomach and intestines
The kidneys and liver
What are the pleurae?
The bones of the thoracic cavity
The muscles between the ribs
The membranes surrounding the lungs
The passages of the nasal cavity
Where are the intercostal muscles located?
Between the ribs
Inside the lungs
Around the diaphragm
In the nasal cavity
During inspiration, what happens to the diaphragm?
What is the primary mechanism for gaseous exchange in the lungs?
Osmosis
Filtration
Diffusion
What percentage of oxygen is typically found in inspired air?
78%
21%
0.03%
16%
Which lung volume represents the total amount of air that can be forcibly exhaled after taking the deepest breath possible?
Tidal volume
Residual volume
Vital capacity
Inspiratory reserve volume
Which part of the brain acts as the respiratory centre?
Cerebellum
Medulla oblongata
Hypothalamus
Cerebrum
How do chemoreceptors influence breathing rate?
By detecting oxygen levels in the lungs
By detecting changes in blood carbon dioxide levels
By measuring blood pressure
By controlling muscle contractions
What is the primary response of the respiratory system during exercise?
Decreased breathing rate
Decreased heart rate
Increased breathing rate
Increased heart rate
Which of the following is a physiological response to exercise?
Decreased heart rate
Decreased breathing rate
Increased breathing rate
Increased digestion rate
