HSC 232 Lecture Notes - Lecture 10: Breathing, Cardiac Output, Stroke Volume
Document Summary
Typically higher in women than in men. Sbp- pressure exerted on the arterial wall during contraction (120 mm hg) Dbp- pressure during relaxation phase of ventricles (80 mm hg) Stroke volume (sv): the amount of blood ejected from the left ventricle in a single contraction. End-diastolic volume (edv): total volume of blood in ventricles at the end of a diastole. End-systolic volume (esv): total volume of blood in ventricles at the end of a systole. Cardiac output (q): volume of blood pumped by the heart per minute. Vo2 (l of o2/min): measure of o2 consumption. Vo2 = volume of o2 inhaled- volume of o2 exhaled. Vo2 = pulmonary ventilation x o2 extraction. The more o2 consumed the more energy (calories) used. The more o2 a person can take in, deliver, and utilize, the more work he or she can perform. It is expressed in either relative terms (ml/kg/min) or absolute) terms (l/ min)
