EDKP 395 Lecture Notes - Lecture 8: Sympathetic Nervous System, Quadriceps Femoris Muscle, Vasodilation

• School: McGill University
• Department: Kinesiology and Physical Ed
• Course: EDKP 395
• Professor: Mark Brawley

Document Summary

Essential models for understanding cardiovascular & pulmonary physiology during exercise. How do the cardiovasvular and respiratory systems limit human exercise. Role of cardio(cid:448)as(cid:272)ular a(cid:374)d respirator(cid:455) s(cid:455)ste(cid:373)s: mai(cid:374)tai(cid:374)i(cid:374)g ho(cid:373)eostasis of . 4 key regulated variables in exercise: muscle o2 delivery: muscle oxygenation, blood pressure: required for tissure perfusion, acid/base balance (i. e. , [h+] regulation): la-, co2, body temperature: heat dissipation. Delivery of oxygen from the outside air into the muscle fiber. Alveolar ventilation is a function of the breathing pattern as well as the inspired. Pp of o2 as well as the dead space ventilation ((cid:449)hat does(cid:374)"t participate in gas exchange) Pio2 = partial pressure of inspired o2. Dklungo2 = diffusive conductance of the lung for o2, where conductance reflects how much movement (e. g. , flow) is allowed or permitted. Palvo2 and pcapo2 = partial pressure of o2 in the alveoli and capillaries, respectively. Cao2 = arterial blood o2 content (determined, in part, by pulmonary gas exchange)