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Date	November 2018	Marks available	1	Reference code	18N.1.SL.tz0.6
Level	Standard Level	Paper	Paper 1	Time zone	time zone 0
Command term		Question number	6	Adapted from	N/A

Question

What is the action of the diaphragm and the external intercostal muscles during exhalation?

Markscheme

A

Examiners report

Sixth most challenging question (52.87% correct).

Syllabus sections

Topic 2: Exercise physiology » 2.1. Structure and function of the ventilatory system » 2.1.4. Explain the mechanics of ventilation in the human lungs.

22M.1.SL.tz0.5: Which occurs during the inhalation phase of ventilation during exercise?
16M.2.SL.tz0.2c: Explain the mechanics of inhalation in the human lungs.
18N.1.HL:.tz0.5: What is the action of the diaphragm and the external intercostal muscles during exhalation?
19N.1.HL:.tz0.3: What is the action of the diaphragm and the alveolar pressure relative to the atmospheric...
16N.2.SL.tz0.7a:
Explain the mechanics of pulmonary ventilation in the human lungs at rest.
17N.2.SL.tz0.5b:
Describe the mechanics of inspiration in the final stages of a cycling race.
19N.2.SL.tz0.6d:
Explain how the mechanics of exhalation change from rest to exercise.
19M.2.SL.tz0.5a:
Describe the mechanics of ventilation during high intensity interval training.
20N.2.HL:.tz0.3e:
Explain the mechanics of inspiration for an athlete completing an aerobic fitness test.
21M.2.HL:.tz0.4b:
Explain the mechanics of inhalation in the lungs during exercise.

Topic 2: Exercise physiology » 2.1. Structure and function of the ventilatory system

Topic 2: Exercise physiology