BIO 203 FINAL EXAM LECTURES 20-28 Accurate 100%

A ____ is contraction and emptying of the chamber of the heart. ______ is the relaxation and filling of the chamber of the heart. - ANSWER systole diastole Where does INITIAL amount of Ca++ used in the contractile cell originate from? Where does the MAJORITY of the Ca++ used in the contractile cell originate from? - ANSWER ECF SR Which ions are necessary for the AUTORHYTHMIC cell action potential? Which ions are necessary for the CONTRACTILE cell action potential? - ANSWER autorhythmic cell: Ca++ and K+ contractile cell: Na+, Ca++, and K+ Describe Boyles Law, as it was explained in class. - ANSWER Pressure and volume are inversely related. Liquid will flow from a ____ pressure area to a ____ pressure area. - ANSWER high low As the atria contracts, what will happen