Across
- lack of oxygen in tissues
- collapsed lung
- spasm of the diaphragm
- whooping cough
- voice box
- space at the back of the oral cavity
- air sacs
- divides left and right nostrils
- bones that divide the nasal cavity
- tubes from trachea to lungs
- respiratory center of brain
- pause in breathing during sleep
- windpipe
- spaces within the skull bones
- opening with vocal cords
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Down
- where cellular respiration takes place
- keeps alveoli from collapsing
- illness caused by smoking
- test that measures air volume
- required for cellular respiration
- inflammation of air passages
- prevents food entering airway
- cavity where lungs sit
- muscle used for breathing
- fluid build-up in air sacs, caused by altitude sickness
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