| Date | November 2020 | Marks available | 1 | Reference code | 20N.1.SL.tz0.7 |
| Level | Standard Level | Paper | Paper 1 | Time zone | time zone 0 |
| Command term | Which | Question number | 7 | Adapted from | N/A |
Question
The diagram shows the human heart. Which valve is labelled X?
[Source: Adapted from Heart diagram with labels in, ZooFari, https://en.wikipedia.org/wiki/
Cardiology#/media/File:Heart_diagram_blood_flow_en.svg, licensed under the Creative Commons Attribution-Share
Alike 3.0 Unported license, https://creativecommons.org/licenses/by-sa/3.0/legalcode.]
A. Bicuspid
B. Tricuspid
C. Aortic
D. Pulmonary
Markscheme
A
Examiners report
A challenging question with a decent discrimination index.
Syllabus sections
- 22M.1.SL.tz0.6: What blood vessel does the cardiovascular system use to send deoxygenated blood to the...
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19N.1.SL.tz0.5:
The diagram shows an anterior view of the heart. Which blood vessel is labelled X?
[Source: adapted from Heart diagram with labels in, ZooFari, https://en.wikipedia.org/wiki/Cardiology#/media/File:Heart_
diagram_blood_fl ow_en.svg, licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license,
https://creativecommons.org/licenses/by-sa/3.0/legalcode]A. Aorta
B. Pulmonary artery
C. Pulmonary vein
D. Vena cava
-
17M.1.SL.tz0.7:
What is the structure labelled X in the diagram below?
[Source: © International Baccalaureate Organization 2017]
A. Bicuspid valve
B. Tricuspid valve
C. Aortic valve
D. Pulmonary valve
- 19M.1.SL.tz0.7: What type of blood is pumped by each of the blood vessels listed?
- 18N.2.HL:.tz0.9a: Describe the path taken by blood from the right ventricle to the left ventricle.
- 21M.2.SL.tz0.2a: State the blood vessels A, B and C in the diagram. A: B: C:
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21M.2.HL:.tz0.4a:
Describe the functions of the main blood vessels connecting the heart and the lungs.
