title: Some mechanisms of changes in external respiration during the menstrual cycle and pregnancy.
mesh_terms: D000328:Adult; D000531:Altitude; D004967:Estrogens / Q000502:physiology; D005260:Female; D006801:Humans; D007743:Labor, Obstetric; D008598:Menstruation; D009132:Muscles / Q000502:physiology; D011225:Pre-Eclampsia / Q000503:physiopathology; D011247:Pregnancy; D011374:Progesterone / Q000502:physiology; D011663:Pulmonary Surfactants / Q000502:physiology; D012119:Respiration; D012125:Respiratory Center / Q000502:physiology
chemical_list: D004967:Estrogens; D011663:Pulmonary Surfactants; D011374:Progesterone