KINE 1020 Lecture Notes - Lecture 1: Internal Intercostal Muscles, External Intercostal Muscles, Bronchiole

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 1020
• Professor: Gumeniak, Richardson

Document Summary

Kine1020 lecture 1 cardiorespiratory physiology and fitness. Larynx (also where sounds come from: nose/mouth, pharynx (throat) 3: trachea (windpipe, bronchi (2 of them, lead to each lung, bronchioles (alveoli at the end) At the start, air must be warmed and moistened bc alveoli are very small and thin-walled so cold or dry air can damage them. Cilia catch foreign paricles and push them and mucus up unil they reach epiglois so they can be swallowed (can"t push all the way up to nose/mouth to exit) If close enough to top i. e. nasal/oral cavity, can exit body instead. Respiratory zone (gas exchange: mouth/nose, trachea c, bronchi, bronchioles. Humidiies, warms, and ilters air: bronchioles (iny bit, alveoli. *not all of inhaled breath reaches here, some remains at the conducive zone (dead zone) Blood cells (rbc) go through one-by-one for maximum eiciency, drop of co2 and pick up o2 (capillaries are super narrow) Blood returning from issue doesn"t have 0% o2!