Anatomy & Physiology › Section T · The respiratory system › Topic T.1
Respiratory organs and the lungs
Each breath travels through a branching set of tubes that clean, warm and moisten the air before it reaches hundreds of millions of tiny sacs where blood picks up oxygen. This topic follows that route from the nose to the alveoli and describes the lungs and the membranes that wrap them.
In this topic
- Two zones with different jobs
- The nose and nasal cavity
- The pharynx
- The larynx
- Trachea and bronchial tree
- Worked example: an inhaled peanut
- Alveoli and the respiratory membrane
- Worked example: estimating the exchange area
- The lungs: lobes and blood supply
- The pleurae
- Common mistakes to avoid
- Key takeaways
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