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Este Cmap, tiene información relacionada con: Ventilation, Expiration volumes expiratory reserve volume, tidal volume (Vt) normally 500 ml, Respiratory zone function gas exchange, more negative intrapleural and alveolar pressure function of Boyle's law, pressure greater in lungs then atmospheric action air forced out of lungs and return to FRC, collapse alveoli according to law of Laplacwe kept open by surfactant, external intercostals and accessory muscles contracts therefore increasing the volume of the lungs, compression of air alveoli results in pressure greater in lungs then atmospheric, Functional residual capacity (FRC) combined form total lung capacity, Expiration where airflows out of the lungs, resistance determined by <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> Poiseuille's law R= 8ηl ∏ r4 η=viscosity l=length r =radius </mtext> </mrow> </math>, inspiratory capacity combined form vital capacity, bronchioles and terminal bronchioles ultimately 23 divisions, Respiratory zone structures include alveoli, internal intercostal and abdominal muscles cause increased alveolar and less negative intrapleural, Conducting zone control ANS, Conducting zone function bring air into and out of lungs, filter air by mucus secreting and ciliated cells, Conducting zone structures include nasopharynx, passive result of lung elastic forces