EXSS2028 Lecture Notes - Lecture 8: Pulmonary Artery, Circulatory System, Hemoglobin

• School: University of Sydney
• Department: Exercise and Sport Science
• Course: EXSS2028
• Professor: Kieron Rooney

Document Summary

Acute adaptations to exercise (pulmonary, neuroendocrine etc) Metabolic demand: linked to metabolism, increased demand comes from exercise (need for oxygen utilised in metabolic processes) demand within the muscles, brain, heart. Gas exchange: exchange of 2 gases (o2 and co2) occurring in the capillaries in the lungs. More oxygen is required during exercise as the muscles demand it. O2 is utilised in metabolic processes (g. etc chain) To supply more o2 to the exercising muscles, increase blood flow (o2 transport) > o2 enters lungs > enters pulmonary blood > enters working muscles. Gas exchange of o2 and co2 in the lungs and the pulmonary blood that flows through the lungs. Co2 > away from blood into the lungs. O2 in mitochondria > utilised by enzymes in etc chain = co2 and atp. Haemoglobin: transports o2 from the lungs to the working muscles. Left ventricle = blood to systemic circulation (shared to organs via parallel circulation in lower/upper body) > arterial system.