KINS 2203 Chapter Notes - Chapter 7: Breathing, Respiratory Center, Tidal Volume

• School: Temple University
• Department: Kinesiology
• Course: KINS 2203
• Professor: Mayra C.Santiago

Document Summary

Chapter 7: the respiratory system and its regulation. Tidal volume- amount of air entering and leaving lungs with each reth. Respiratory muscles are controlled by motor neurons which are regulated by respiratory centers in the brain stem (medulla and pons) Respiratory centers determine the rate and depth of breathing by sending signals to respiratory muscles (efferent) Motor cortex can override the respiratory center if voluntary control of respiration is wanted. Central chemoreceptors stimulated by h+ and co2 levels. Increase in h+= increase in co2= increase ventilation. Cemorectpros in aortic and common carotid bodies. Sensitive to po2 changes and h+ and pco2. Pco2 is main stimulus for regulation of breathing. Co2 levels are too highcarbonic acid forms dissociates gives off. Stretch reports in bronchioles and alveoli relay signals to brain if stretched too much.