2. Increased heart rate/increased blood pressure (ii) Explain why Sulliman’s cardiovascular system alters in this way during exercise (2)<br />increased oxygen delivery/carbon dioxide transport<br />12.Some participants take illegal performance enhancing drugs to control their heart rate despite the obvious health risks.<br />(a) What effect do beta blockers have on a participant’s heart rate? (1)<br />Calming effect on performer’s heart rate/slows it. <br />(b) Some people take forms of recreational drugs which can harm their body systems and health.<br />What effect does drinking alcohol have on blood pressure? (1)<br />Raises the blood pressure<br />13.State two potential long term effects of regular exercise on Lucy’s cardiovascular system? (2)<br />Any two of the following:<br />lower blood pressure/equivalent<br />lower resting heart rate<br />increased stroke volume<br />faster recovery<br />increased cardiac output<br />increased size of heart<br />14.For each of the following component of blood, state whether the components main function is transport or protection (4)<br />i. white cells PROTECTION <br />ii. red cells TRANSPORT <br />iii. plasma TRANSPORT <br />iv. platelets PROTECTION <br />15.Fill in the blanks using the word arteries or veins. (4)<br />i. …ARTERIES Work under high pressure <br />ii. …VEINS Rarely pulsate <br />iii. ARTERIES have thick walls <br />iv. ARTERIES .have elastic walls. <br />16. Define the terms stroke volume & heart rate (2)<br />Stroke Volume. THE VOLUME OF BLOOD PUMPED OUT OF THE HEART BY EACH VENTRICLE DURING ONE CONTACTION<br />Heart Rate . THE NUMBER OF TIMES THE HEAR BEATS PER MIN (BPM) <br />17. Explain the immediate effect of exercise on Stroke volume (1)<br />INCREASES<br /> (__________/40 marks) %=_________________ GCSE GRADE:_____________________<br />