3.1 What range of blood pressure is found in the arteries? (1)

1.3 Which one describes the blood in vessels R and S correctly? (1)           R S A Deoxygenated Deoxygenated B Deoxygenated Oxygenated C Oxygenated Deoxygenated D Oxygenated Oxygenated    

INSTRUCTIONS   1. The answers you provide to the question paper, must be your own, original work. No copying from any source is allowed. No marks will be awarded for work that is copied.   2. Read all the questions carefully.   3. Use the mark allocation as a guide to how much information is required in your answers.   4. Answer all the questions.  

  QUESTION 4     Read the following article and answer the questions that follow.   Right click on the button to open the article in a new window.    

4.3 If you or someone in your family had heart damage, would you undergo this treatment? Motivate your answer.  (2)

5.1 Identify the independent variable. (1)

3.3 What is the pressure of the blood as it enters the heart? High pressure or low pressure? (1)

1.4 Which one describes the structure of vessels R and S correctly? (1)           R S A Thick, muscular wall Thin, muscular wall B Small lumen Large lumen C Thin, muscular wall Thick, muscular wall D Largest blood vessel Small blood vessel    

Beach dunes will be more resilient to erosion and storms if:

3.4 An average adult’s heart pumps 540 litres of blood in one hour. If an adult’s total blood volume is 6 litres, how many times will this blood have to circulate around the body in an hour? (2)