KNES 303 Lecture Notes - Lecture 4: Oxidative Phosphorylation, Cellular Respiration, Heart Rate
30 Jan 2020
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Knes 303 lecture 4 cardiovascular responses. It refers to how quickly atp is hydrolyzed and replenished per unit of time: greater atp turnover rates lead to quicker development of fatigue compared to lower rates. Exercise onset: usage of atp causes change in atp to adp ratio, 2. Pcr breakdown: atp adp ratio changes cause the pcr system to be stimulated, concentration of adp continues to increase, which is a powerful stimulant for oxidative phosphorylation to be activated, 3. Increased mitochondria activity: vo2 increases almost immediately by increasing oxidative phosphorylation, which increases oxygen demand in the muscle cells, 4. Increase of o2 delivery: blood flow is increased to increase the amount of o2 being delivered to the muscles, 5. Mitochondria provides all the atp: vo2 reaches steady state and all of the energy (atp) is provided by oxidative phosphorylation, there is still oxygen demand and blood flow is increased even more, 8.
