RichardKing2376
18.05.2021 •
Biology
ASSIGNMER
(b) Fig. 7.2 shows the total cross-sectional area of the blood vessels in the systemie
circulation. It also shows the changes that occur in blood pressure and the speed
(velocity) of blood in the different blood vessels.
6.
vena cava
Bora
issue huid
SS
29
3
4000
total Cross-
3000
sectionarea
of the blood
vessels./ama 2000
1000
0
pressure
mean blood
Pressure / Pa
speed of the
blood /cm 5-1
50
-40
valocity
16112109876543210
30
-20
10
0
aorta
arteriales
arteries capillaries
veins
vena cava
Fig. 7.2
(i) State the maximum mean blood pressure in the aorta.
13 kPa
[1]
(ii) Describe how mean blood pressure and speed of blood change with cross-
sectional area of blood vessels, as shown in Fig. 7.2.
blood pressure
NSSCO BIOLOGY - ASSIGNMENT 1 - 2021
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