BIOL 3310 Lecture 2: Respiratoryorganisation
Document Summary
Respiratoryorganisation respiratory section consists of alveoli and other peach state exchange regions. Bronchial tree: primary bronchi arise from trachea after 2-threesome cm enter hilum of lung secondary winding bronchi one for each lobe tertiary bronchi ten right, 8 left. Motor cortex of frontal lobe sends impulses to spinal cord, bypassing brainstem eupnea pattern , relaxed breathing. Resistance to ow of air : pulmonary complaisance. Distensibility of the lungs decreased in diseases with pulmonary brosis (tb) Factors affect o2 unloading: o2 is released when ambient po2: active agent tissue has po2 temperature: active tissue has + temp orary bohr effect: active tissue has + co2, which lowers ph (heftiness sunburn ) . Bisphosphoglycerate (bpg): rbc"s garden truck bpg which binds to hb + body temp (fever), th, Gh, testosterone, and epinephrin all raise bpg and cause o2 unloading ( metabolic rate requires - oxygen)
