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WorksheetsPHS Respiratory System
Total questions: 10
Worksheet time: 5mins
What is the most important function of the respiratory system?
mixing oxygen into the blood
mixing carbon dioxide into the blood
moving the blood through the body
moving air through the bloodstream
Most of the organs in this system are shaped like
sheets
tubes
spheres
bumps
Which organ produces your voice when air passes through it?
pharynx (throat)
oral cavity (mouth)
nasal cavity (behind the nose)
vocal cords
Some organs in this system also belong in the digestive system. Which organ also allows you to swallow food?
nasal cavity (behind the nose)
pharynx (throat)
larynx (voice box)
trachea (windpipe)
Which organ is a single tube that connects the upper respiratory system to the lower respiratory system (below the neck)?
Nasal cavity
pharynx (throat)
epiglottis
trachea (windpipe)
Before air enters the larynx (voice box), it must pass over an organ made of cartilage. This organ separates the airway from the esophagus tube leading to the stomach. It covers the airway when we swallow food.
tongue
nasal cavity
pharynx (throat)
epiglottis
As the airways branch off to different parts of the lungs, they become
smaller
larger
more red
more blue
If the airways in the lungs look like branches of a tree, what would be the leaves at the ends of the branches?
capillaries (small blood vessels)
alveoli (air sacs)
trachea
vocal cords
The capillaries (blood vessels) in the alveoli change from dark red to bright red in the direction of blood flow. This is because
oxygen levels increase in the blood
carbon dioxide levels increase in the blood
oxygen levels increase in the lungs
carbon dioxide levels decrease in the lungs
Which of these is NOT a function of the respiratory system?
mixing oxygen into the blood
moving blood through the body
prevents dust, pollen and bacteria from entering the lungs
allows us to speak
