Kin 470 1st Edition Lecture 6 Outline of Last Lecture I. Lactate Threshold,II. The Cori Cycle,III. Lactate- Shuttle hypothesis, IV. McArdle’s Syndrome, V. Sources of fuel during exercise, a. CHO, b. FAT, c. PROOutline of Current Lecture II. Cardiovascular system response to exerciseIII. HomeostasisIV. HeartV. Blood pressureCurrent LectureDiscussed test on ThursdayCardiovascular system response to exercise- a major challenge to homeostasis passed by exercise-during heavy exercise, need for oxygen may increase 15 to 25 fold-two major adjustments to meet increased oxygen demands-increase cardiac output-redistribution blood flowheart have 1 way valves-3 layers- epicardium, myocardium, endocardiumCardiac muscle fibers- have a high density of mitochondria compared to the skeletal because the heart can not get fatigued so it needs more mitochondriaPulmonary-right side of the heart-pumps to the lungs with deo2-pumps to left heart o2 bloodThese 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.systemic- pumps o2 to the whole bodysystole- contraction phasediastole- relaxation phasepressure changes during the cardiac cycle-diastole- pressure in ventricles is low-systole- pressure in ventricles risesPressure, volume and heart sounds during the cardiac cycle-isovoluminc stage-when atria contracts there is an added volumeBlood pressurePulse=systolic – diastolicMean arterial pressure-average pressure in the artiersMAP= diastolic + 1/3 (pulse
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