KIN 470 1st Edition Lecture 11 Outline of Last Lecture I. Onset of exerciseII. heart rate blood pressure Outline of Current Lecture II. Central command theoryIII. RespirationIV. Lung functionCurrent LectureInitial signal to “drive” cardiovascular system comes from higher brain centersDue to centrally generated motor signals Fine-tuned by feedback from:Heart mechanoreceptorsMuscle chemoreceptorsSensitive to muscle metabolites (K+, lactic acid)Exercise pressor reflexMuscle mechanoreceptorsSensitive to force and speed of muscular movementBaroreceptorsSensitive to changes in arterial blood pressureTwo types of respiration• Pulmonary respirationVentilationExchange of O2 and CO2 in the lungsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.• Cellular respirationO2 utilization and CO2 production by the tissuesFunctions of the lungs• Gas exchange between external environment and bodyReplacing O2 Removing CO2Regulation of acid-base balance• Ventilation Mechanical process of moving air• Diffusion Random movement of molecules from an area of high concentration to an area of lower
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