(a)[3]
Finish Table 5.1 by putting a number beside each event so that they show the order in which one heart beat is controlled and occurs. Start the sequence with 1.
(b)[2]
Explain the conditions that cause the semi-lunar valves to close during the cardiac cycle.
(c)[2]
At the arterial end of a capillary bed in muscle tissue, hydrostatic pressure is high enough to bring about the formation of tissue fluid. Explain how the composition of blood differs from the composition of tissue fluid at the arterial end of a capillary bed.