| Date | May 2015 | Marks available | 1 | Reference code | 15M.1.SL.TZ1.29 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Identify | Question number | 29 | Adapted from | N/A |
Question
What changes take place in the thorax during inhalation?
Markscheme
B
Examiners report
This was also poorly answered, with only slightly more than 30% of candidates selecting the correct answer. Knowledge of the mechanism of ventilation is often patchy, with candidates either muddled or lacking in knowledge of the details of muscle contraction.
Syllabus sections
Show 66 related questions
- 17N.1.HL.TZ0.23: Which type of cell is specialized to facilitate gas exchange? A. Type I pneumocytes B. Type...
- 17N.2.HL.TZ0.01g: Discuss the advantages and disadvantages of using rats as models in this investigation.
- 17N.2.HL.TZ0.01f: Using all relevant data in the question, evaluate the effectiveness of the rats’ adaptation...
- 17N.2.HL.TZ0.01e.ii: Hypoxia caused a 13 % increase in the surface area to volume ratio of the diaphragm. Suggest...
- 17N.2.HL.TZ0.01e.i: Outline the effect of hypoxia on the force of contraction of the diaphragm.
- 17N.2.HL.TZ0.01d.ii: Muscle fibres are stimulated to contract by the binding of acetylcholine to receptors in...
- 17N.2.HL.TZ0.01d.i: Analyse the graph to obtain two conclusions about the concentration of sodium–potassium...
- 17N.2.HL.TZ0.01c: Using the data presented in this question, explain the effect of hypoxia on the body.
- 17N.2.HL.TZ0.01b: Using the data in the graph, deduce whether hypoxia increases or decreases the endurance of...
- 17N.2.HL.TZ0.01a: Outline the effect of hypoxia on body mass and erythrocyte percentage.
- 17N.2.SL.TZ0.01h: Discuss whether measurements of desmosine concentration would be useful for monitoring...
- 17N.2.SL.TZ0.01g: Other studies on pulmonary diseases have shown a wide variety of results. Apart from age, sex...
- 17N.2.SL.TZ0.01f: State the relationship between diffusion capacity and urine desmosines.
- 17N.2.SL.TZ0.01e: Elastin is also an important component of other tissues such as arteries and ligaments....
- 17N.2.SL.TZ0.01d: Evaluate which of the two biomarkers would be the most useful indicator of COPD severity.
- 17N.2.SL.TZ0.01c: State the disease severity group that has the highest range of plasma desmosines.
- 17N.2.SL.TZ0.01b: Explain how a low FEV can be used to indicate emphysema.
- 17N.2.SL.TZ0.01a: State the level of COPD that has the lowest FEV.
- 16N.2.SL.TZ0.6c: Describe what happens in alveoli.
- 16N.1.SL.TZ0.28: Which conditions are correct for inspiration?
- 16N.1.SL.TZ0.27: What is the purpose of pulmonary surfactant? A. Promotes capillary growthB. Decreases...
- 15M.1.SL.TZ2.28: The image shows a section of the human respiratory system. Which letter identifies a...
- 15M.3.SL.TZ2.6a: Define tidal volume and ventilation rate. Tidal volume: Ventilation rate:
- 15M.3.SL.TZ2.6b: Explain the processes that control changes in ventilation rate during exercise.
- 15M.2.HL.TZ1.6c: Active skeletal muscle requires a good supply of oxygen. Outline the mechanism of ventilation...
- 15M.3.SL.TZ1.5b: Describe the effects of training on the pulmonary system.
- 13M.2.HL.TZ1.8c: Explain the mechanism of ventilation of human lungs.
- 13M.2.HL.TZ1.8b: A supply of oxygen is needed for aerobic respiration in mitochondria. Describe the...
- 13M.2.SL.TZ2.6c: Explain the mechanism of ventilation in the lungs in order to promote gas exchange for cell...
- 13N.1.HL.TZ0.23: What muscle actions cause air to be expelled from the lungs?A. Internal intercostal muscles...
- 13M.3.HL.TZ2.13a: State the relationship between asthma and lung function.
- 13M.3.HL.TZ2.13b: Calculate the change in lung function of females with asthma between the ages of 11 and 26.
- 13N.2.SL.TZ0.5c: Explain the mechanism of ventilation in humans.
- 13M.3.HL.TZ2.13c: Compare the data for 26-year-old males and females.
- 13M.1.SL.TZ1.28: What changes occur in the thorax of a mammal when the external intercostal muscles and...
- 13M.3.HL.TZ2.13d: Explain how the units used to measure lung function are useful in showing if a person suffers...
- 13M.3.SL.TZ1.5d: Explain the changes in ventilation rate during exercise.
- 11M.1.SL.TZ1.28: What normally prevents the membranes of the alveoli from sticking together during...
- 12M.2.HL.TZ2.3b: Describe three features of alveoli that adapt them to gas exchange.
- 12M.1.HL.TZ1.21: What is a feature of alveoli? A. They occur in all animals because they are needed for gas...
- 12M.1.HL.TZ2.22: The diagram shows the ventilation system in humans. What is the function of the structure...
- 12M.2.SL.TZ1.7c: Explain the need for a ventilation system and the mechanism of ventilation of the lungs in...
- 09M.1.HL.TZ2.14: Which muscle action is associated with an increase in the volume of the thoracic cavity when...
- 09M.2.SL.TZ2.5c: Explain the mechanisms involved in the ventilation of the lungs.
- 09M.1.SL.TZ1.27: What feature of alveoli adapts them to efficient gas exchange? A. They have muscles which...
- 10M.1.SL.TZ1.28: What is the function of the structure labelled X? A. Gas exchange B. Ventilation C....
- 10M.1.SL.TZ2.27: Which of the following features of the alveoli adapt them to gaseous exchange? I. Single...
- 10M.1.SL.TZ2.29: What happens to the external and internal intercostal muscles and diaphragm when inhaling?
- 10M.2.SL.TZ2.4b: Describe the need for a ventilation system in humans.
- 10M.1.HL.TZ1.23: Which muscles contract to cause air to pass into the lungs through the trachea? A. Internal...
- 09N.1.SL.TZ0.27: What change occurs to the pressure and volume of the lungs when the external intercostal...
- 11N.1.HL.TZ0.29: What occurs during the process of ventilation? A. Contraction of external intercostal...
- 11N.2.SL.TZ0.7a: Distinguish between ventilation, gas exchange and cell respiration.
- 12N.2.HL.TZ0.1b: Compare the composition of natural human surfactant with synthetic surfactants.
- 12N.2.HL.TZ0.1a: State the surfactant that contains the least amount of phospholipids.
- 12N.2.HL.TZ0.1c: Phospholipids found in the surfactants form a surface film on the moist lining of the...
- 12N.1.SL.TZ0.26: Which statement describes the movements of the rib cage during inhalation of air? A....
- 09N.2.SL.TZ0.6a: Draw a labelled diagram to show the human ventilation system.
- 17M.3.SL.TZ1.3b: Explain the change in the tidal volume during exercise.
- 17M.3.SL.TZ1.3a: Calculate the difference in ventilation rate between resting and exercising.
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 17M.1.HL.TZ2.34: The graph shows the ventilation rate and the oxygen consumption of a subject before, during...
- 17M.1.SL.TZ2.28: Where does gas exchange occur in the lungs? A. In type I pneumocytes B. In the...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
