Bio 253 Exam 1 (Main Review) 100%correct

A molecule common to skeletal AND smooth muscle crossbridge cycling {Ans: actin}What component of artery walls stores energy {Ans: elastin}How do pacemaker cells differ from contractile cells? {Ans: autorhythmic, don't contract}Lactic acid comes from {Ans: anaerobic respiration}As part of the baroreceptor reflex response to hemorrhage, what two things increase? {Ans: heart rate, TPR}Reactive hyperemia is a result of changes in ___ ___ {Ans: blood flow}