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Across
The respiratory system works well with this system and the kidneys to keep the right levels of oxygen in the bloodstream.
works well with the respiratory system to make sure that oxygen-rich blood can flow through your body.
When foreign particles enter the respiratory system, this system releases protection in the form of lymphocytes and macrophages
Down
Without this, the upper respiratory tract would have no structure at all and would be nothing but soft tissues.
The lungs have receptors and sensors that react to deflation, inflation and chemical stimulation. This can ultimately activate this system, resulting in a neutrally controlled response, like a sudden cough or an altered breathing pattern.
This system uses contractions from muscles to break down the food and move it through the tract. Which works well with the respiratory system.