KINE 3012 Chapter Notes - Chapter 13.8: Breathing, Respiratory Tract, Respiratory Rate

• School: York University
• Department: Kinesiology & Health Science
• Course: KINE 3012
• Professor: Michael Connor

Document Summary

Alveolar ventilation & pulmonary ventilation: pulmonary/minute ventilation is volume of air breathed in/out in minute (ml/min) Pulmonary ventilation (ml/min) = tidal volume (ml/breath) x respiratory rate (breaths/min: normal values: Pulmonary ventilation 6l (air in/out in one minute: ventilation can be voluntarily increased to 150 l/min. Tidal & respiratory rate must be increased. Greater increase in tv than respiratory rate. Anatomic dead space: not all inspired air gets to alveoli. Some remains in conducting airways (not for gas exchange)- Alveolar ventilation: alveolar ventilation: volume of air exchanged b/t atmosphere & alveoli per minute, more important than pulmonary ventilation, alveolar ventilation= (tv- dead space volume) x respiratory rate, average values: Alveolar ventilation= (500ml/breath 150ml dead space) x 12 breaths/min. Effect of breathing patterns on alveolar ventilation: larger increase in depth of breathing (larger tv) when pulmonary ventilation increase is essential during exercise. When tidal volume increases, entire increase goes towards increase alveolar ventilation: respi(cid:396)ato(cid:396)y (cid:396)ate inc(cid:396)ease doesn"t enti(cid:396)ely go to(cid:449)a(cid:396)ds inc(cid:396)easing al(cid:448)eola(cid:396).