2. Match the following parts of the circulatory system to their description. (8 marks) a)blood vessels b)veins c) arteries d)blood e)capillaries f) heart g)arterioles h)venules
(i) controls blood flow to capillaries (ii) vessels that capillaries merge into (iii) Blood flow is reduced here, they have one-way valves (iv) thick-walled, carry oxygenated blood around the body (v) a fluid in which materials are transported (vi) a system of spaces throughout the body in which fluid moves (vii) where gas exchange occurs (viii) pump of the circulatory system
3. In what order does blood flow through the different vessels from heart to the body and back to the heart? (2 marks)
4. Differentiate between atria, septum and ventricles. (3 marks)
5. (a) What are 3 special vessels that lead to and from the heart? (3 marks)
(b) Describe each. (3 marks)
Part B: Application (6 marks)
6. Choose either the pulmonary or the systemic circuit of the heart to describe the following:
a)Which side of the heart is the circuit? (1 mark) b)The blood flow through the different parts of that side. (5 marks)
Part A: Knowledge and Understanding (23 marks)
1. Why do we need a circulatory system? (4 marks)
2. Match the following parts of the circulatory system to their description. (8 marks)
a)blood vessels
b)veins
c) arteries
d)blood
e)capillaries
f) heart
g)arterioles
h)venules
(i) controls blood flow to capillaries
(ii) vessels that capillaries merge into
(iii) Blood flow is reduced here, they have one-way valves
(iv) thick-walled, carry oxygenated blood around the body
(v) a fluid in which materials are transported
(vi) a system of spaces throughout the body in which fluid moves
(vii) where gas exchange occurs
(viii) pump of the circulatory system
(b) Describe each. (3 marks)
Part B: Application (6 marks)
- 6. Choose either the pulmonary or the systemic circuit of the heart to describe the following:
a)Which side of the heart is the circuit? (1 mark)b)The blood flow through the different parts of that side. (5 marks)