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Question 18N.2.SL.TZ0.b

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Date November 2018 Marks available [Maximum mark: 3] Reference code 18N.2.SL.TZ0.b
Level SL Paper 2 Time zone TZ0
Command term Explain Question number b Adapted from N/A
b.
[Maximum mark: 3]
18N.2.SL.TZ0.b

Explain how the circulatory system is able to transport the blood under high pressure from the heart to the rest of the body.

[3]

Markscheme

a. contraction of ventricle creates high pressure ✔

b. blood at high pressure is carried out of the heart through arteries ✔

c. thick muscular walls of arteries resist pressure/prevent leaks ✔

d. elastic recoil of arterial walls helps to push blood ✔

e. narrow lumen of arteries maintain pressure ✔

 

Features require an explanation, a list is inadequate

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