What happens to the windpipe, or trachea, before it reaches the lungs?
It branches in two directions.
It branches in three directions.
It vibrates and creates sounds.
It closes up so that no oxygen can escape.
Which process does not occur in the nasal cavity?
Trapping of large foreign bodies
Exchange of gases
Humidification of inhaled air
Warming of inhaled air
What is the purpose of the little hairs inside the nose?
To fight disease.
They serve no purpose.
To keep dust out of the lungs.
To tickle the nose and cause sneezes.
Air can enter the body and travel to the lungs ...
through the mouth and the nose
through the oesophagus and gullet
through the windpipe and the pores
through the nose and the nervous system
Complete the equation: Glucose + Oxygen = _______ + Water + CO2
Energy
Sucrose
None of these
Starch
What is another name for the windpipe?
Lungs
Larynx
Trachea
Oesophagus
What is the respiratory system?
The body's breathing system
The body's system of nerves
The body's food-processing system
The body's blood-transporting system
