WorksheetsHuman Respiratory System Quiz
Total questions: 15
Worksheet time: 8mins
What is the primary function of the human respiratory system?
To circulate blood
To produce ATP
To exchange gases
To digest food
Which structure is often called the voice box?
Esophagus
Larynx
Pharynx
Trachea
What is the role of the epiglottis?
To keep food from going down the trachea
To produce mucus
To filter air
To support the trachea
How many lobes does the right lung have?
One
Two
Three
Four
What is the function of alveoli?
To produce surfactant
To exchange gases
To filter air
To support the trachea
Which muscle is a major muscle involved in respiration located under the lungs?
Intercostal muscles
Cardiac muscle
Diaphragm
Abdominal wall muscles
What happens to blood pH when carbon dioxide concentration increases?
It becomes more basic
It becomes more acidic
It becomes neutral
It remains the same
What is the normal blood pH level?
6.4
7.0
7.4
8.0
Which cells produce surfactant in the alveoli?
Type 1 alveolar cells
Type 2 alveolar cells
Red blood cells
White blood cells
What is the primary role of surfactant in the alveoli?
To produce mucus
To filter air
To decrease surface tension
To increase surface tension
Which system works closely with the respiratory system to transport gases?
Skeletal system
Nervous system
Circulatory system
Digestive system
What is the function of the nasal cavity in the respiratory system?
To produce ATP
To warm, humidify, and filter air
To support the trachea
To exchange gases
Which structure is responsible for keeping the trachea open?
Cilia
Mucus
Epiglottis
Cartilage rings
What is the role of intercostal muscles in respiration?
To help expand or contract the thoracic cavity
To produce surfactant
To exchange gases
To filter air
Which of the following is a condition that can affect premature babies due to lack of surfactant?
Asthma
Respiratory distress syndrome (RDS)
Emphysema
Bronchitis
