The Journey of a Breath: The Respiratory System Explained

You take around twenty thousand breaths a day. Join a tiny Bri as she rides a breath of air from your nose all the way down to the alveoli. Learn every structure along the way, how your airways clean and protect the air, and why the alveoli are perfect for gas exchange. In this video we covered The job of the respiratory system The pathway of air: nasal cavity, pharynx, larynx, epiglottis, trachea, bronchi, bronchioles and alveoli How the airways clean, warm and moisten air: hairs, mucus, goblet cells and lysozyme Cartilage rings and cilia in the trachea and bronchi Gas exchange by diffusion in the alveoli The four tissue types in the respiratory system A past exam question worked through Common mistakes that lose marks Quiz questions to test yourself CHAPTERS 0:00 Intro 0:08 The journey of a breath 0:25 Learning goals 0:39 The job of the respiratory system 1:10 The pathway of air 1:50 Cleaning the air 2:13 Trachea and bronchi 2:37 Alveoli and gas exchange 3:09 Tissues in the respiratory system 3:33 Exam question worked through 3:56 Common mistakes 4:24 Test yourself quiz 5:20 Recap Previous episode: Enzymes. Next episode: the mechanics of breathing. This video is a study aid. Always check with your teacher for anything specific to your school's course. If this helped, like and subscribe for more fun study videos! #HumanBiology #ATAR #RespiratorySystem #Biology #StudyTips