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  • Welcome to the CP Subject Centre
  • Faria Education Group
  • Core
    • Service Learning
    • Language Development
    • Reflective Project
    • Personal and Professional Skills
  • Career-related Study
  • Studies in language and literature
    • Language and Literature
      • Aims & Objectives
      • Syllabus
        • Area of Exploration - Readers, Writers and Texts
        • Area of Exploration - Time and Space
        • Area of Exploration - Intertextuality: Connecting Texts
        • Development of Linguistic Skills
        • Conceptual Understanding
        • Non-Literary Texts
      • Assessment
    • Literature
      • Aims and Objectives
      • Syllabus
        • Areas of Exploration
        • Development of Linguistic Skills
        • Conceptual Understanding
      • Assessment
    • Classical Languages (Last Assessment 2023)
      • Aims & Objectives
      • Syllabus
        • Part 1: Study of Language
        • Part 2: Study of Literature
        • Part 3: Individual study
      • Assessment
    • Classical Languages (First Assessment 2024)
    • Literature and Performance (First Assessment 2024)
  • Language acquisition
    • Language Ab Initio
      • Aims & Objectives
      • Syllabus
        • Identities
        • Experiences
        • Human Ingenuity
        • Social Organization
        • Sharing the Planet
        • Texts
      • Assessment
    • Language B
      • Aims & Objectives
      • Syllabus
        • Identities
        • Experiences
        • Human Ingenuitiy
        • Social Organization
        • Sharing the Planet
        • Texts
      • Assessment
  • Individuals and societies
    • Business Management (Last Assessment 2023)
      • Aims & Objectives
      • Syllabus
        • Unit 1: Business Organization and Environment
        • Unit 2: Human Resource Management
        • Unit 3: Finance and Accounts
        • Unit 4: Marketing
        • Unit 5: Operations Management
      • Assessment
    • Business Management (First Assessment 2024)
    • Digital Society
    • Economics
      • Aims & Objectives
      • Syllabus
        • Unit 1: Introduction to Economics
        • Unit 2: Microeconomics
          • Real-world issue 1
          • Real-world issue 2
        • Unit 3: Macroeconomics
          • Real-world issue 1
          • Real-world issue 2
        • Unit 4: The Global Economy
          • Real-world issue 1
          • Real-world issue 2
      • Assessment
    • Geography
      • Aims & Objectives
      • Syllabus
        • Part one: Geographic themes (SL and HL options)
          • Option A: Freshwater
          • Option B: Oceans and coastal margins
          • Option C: Extreme environments
          • Option D: Geophysical hazards
          • Option E: Leisure, tourism and sport
          • Option F: Food and health
          • Option G: Urban environments
        • Part two: Geographic perspectives - global change (SL and HL core)
          • Unit 1: Changing population
          • Unit 2: Global climate - vulnerability and resilience
          • Unit 3: Global resource consumption and security
        • Part two: Geographic perspectives - global change (HL core extension)
          • Unit 4: Power, places and networks
          • Unit 5: Human development and diversity
          • Unit 6: Global risks and resilience
      • Assessment
    • Global Politics
      • Aims & Objectives
      • Syllabus
        • Engagement Activity
        • Core
        • Additional Higher Level
      • Assessment
    • History
      • Aims & Objectives
      • Syllabus
        • Prescribed Subjects
        • World History Topics
        • HL Options: Depth Studies - History of Africa and the Middle East
        • HL Options: Depth Studies - History of the Americas
        • HL Options: Depth Studies - History of Asia and Oceania
        • HL Options: Depth Studies - History of Europe
      • Assessment
    • Information Technology in a Global Society
      • Aims & Objectives
      • Syllabus
        • Strand 1: Social and Ethical Significance
        • Strand 2: Application to Specific Scenarios
        • Strand 3: IT Systems
        • The Project (practical application of IT skills)
      • Assessment
    • Philosophy
      • Aims & Objectives
      • Syllabus
        • Prescribed Texts
        • Core
        • Additional Higher Level
        • Options
      • Assessment
    • Psychology
      • Aims & Objectives
      • Syllabus
        • Core
          • Biological approach to understanding behaviour
          • Cognitive approach to understanding behaviour
          • Sociocultural approach to understanding behaviour
          • Approaches to researching behaviour
        • Options
          • Abnormal psychology
          • Developmental psychology
          • Health psychology
          • Psychology of human relationships
      • Assessment
    • Social and Cultural Anthropology
      • Aims & Objectives
      • Syllabus
        • Part 1: Engaging with Anthropology
          • The language of anthropology
          • The practice of anthropology
          • Anthropological thinking
        • Part 2: Engaging with Ethnography
          • Group 1
          • Group 2
          • Group 3
        • Part 3: Engaging with Anthropological Practice
      • Assessment
    • World Religions
      • Aims & Objectives
      • Syllabus
        • Part 1: Introduction to World Religions
        • Part 2: In-depth Studies
        • Part 3: Internal Assessment
      • Assessment
  • Sciences
    • Biology (FA 2025)
    • Biology (LA 2024)
      • Aims & Objectives
      • Syllabus
        • Core
          • 1. Cell biology
          • 2. Molecular biology
          • 3. Genetics
          • 4. Ecology
          • 5. Evolution and biodiversity
          • 6. Human physiology
        • Additional Higher Level
          • 7. Nucleic acids
          • 8. Metabolism, cell respiration and photosynthesis
          • 9. Plant biology
          • 10. Genetics and evolution
          • 11. Animal physiology
        • Options
          • Option A: Neurobiology and behaviour
          • Option B: Biotechnology and bioinformatics
          • Option C: Ecology and conservation
          • Option D: Human physiology
      • Assessment
    • Chemistry (FA 2025)
    • Chemistry (LA 2024)
      • Aims & Objectives
      • Syllabus
        • Core
          • 1. Stoichiometric relationships
          • 2. Atomic structure
          • 3. Periodicity
          • 4. Chemical bonding and structure
          • 5. Energetics/thermochemistry
          • 6. Chemical kinetics
          • 7. Equilibrium
          • 8. Acids and bases
          • 9. Redox processes
          • 10. Organic chemistry
          • 11. Measurement and data processing
        • Additional Higher Level
          • 12. Atomic structure
          • 13. The periodic table - the transition metals
          • 14. Chemical bonding and structure
          • 15. Energetics/thermochemistry
          • 16. Chemical kinetics
          • 17. Equilibrium
          • 18. Acids and bases
          • 19. Redox processes
          • 20. Organic chemistry
          • 21. Measurement and analysis
        • Options
          • A. Materials
          • B. Biochemistry
          • C. Energy
          • D. Medicinal chemistry
      • Assessment
    • Computer Science (FA 2025)
    • Computer Science (LA 2024)
      • Aims & Objectives
      • Syllabus
        • Core
          • Topic 1 - System fundamentals
          • Topic 2 - Computer organization
          • Topic 3 - Networks
          • Topic 4 - Computational thinking, problem-solving and programming
        • Additional Higher Level
          • Topic 5 - Abstract data structures
          • Topic 6 - Resource management
          • Topic 7 - Control
        • Options
          • A - Databases
          • B - Modelling and simulation
          • C - Web science
          • D - Object-oriented programming
      • Assessment
    • Design Technology
      • Aims & Objectives
      • Syllabus
        • Core
          • 1. Human factors and ergonomics
          • 2. Resource management and sustainable production
          • 3. Modelling
          • 4. Final production
          • 5. Innovation and design
          • 6. Classic design
        • Additional Higher Level
          • 7. User-centred design (UCD)
          • 8. Sustainability
          • 9. Innovation and markets
          • 10. Commercial production
      • Assessment
    • Nature of Science
      • Aims & Objectives
      • Syllabus
        • Introduction
        • Part A - Concepts
        • Part B - The Quest for Understanding
        • Part C - The Impact of Science
        • Part D - Challenges and the Future
      • Assessment
    • Physics (FA 2025)
    • Physics (LA 2024)
      • Aims & Objectives
      • Syllabus
        • Core
          • 1. Measurements and uncertainties
          • 2. Mechanics
          • 3. Thermal physics
          • 4. Waves
          • 5. Electricity and magnetism
          • 6. Circular motion and gravitation
          • 7. Atomic, nuclear and particle physics
          • 8. Energy production
        • Additional Higher Level
          • 9. Wave phenomena
          • 10. Fields
          • 11. Electromagnetic induction
          • 12. Quantum and nuclear physics
        • Options
          • A. Relativity
          • B. Engineering physics
          • C. Imaging
          • D. Astrophysics
      • Assessment
    • Sports, Exercise and Health Science
      • Aims & Objectives
      • Syllabus
        • Core
          • Topic 1: Anatomy
          • Topic 2: Exercise physiology
          • Topic 3: Energy systems
          • Topic 4: Movement analysis
          • Topic 5: Skill in sports
          • Topic 6: Measurement and evaluation of human performance
        • Additional Higher Level
          • Topic 7: Further anatomy
          • Topic 8: The endocrine system
          • Topic 9: Fatigue
          • Topic 10: Friction and drag
          • Topic 11: Skill acquisition and analysis
          • Topic 12: Genetics and athletic performance
          • Topic 13: Exercise and immunity
        • Options
          • Option A: Optimizing physiological performance
          • Option B: Psychology of sports
          • Option C: Physical activity and health
          • Option D: Nutrition for sports, exercise and health
      • Assessment
  • Mathematics
    • Mathematics: analysis and approaches
      • Aims & Objectives
      • Syllabus
        • Topic 1: Numbers and Algebra
        • Topic 2: Functions
        • Topic 3: Geometry and Trigonometry
        • Topic 4: Statistics and Probability
        • Topic 5: Calculus
      • Assessment
    • Mathematics: applications and interpretation
      • Aims & Objectives
      • Syllabus
        • Topic 1: Number and Algebra
        • Topic 2: Functions
        • Topic 3: Geometry and Trigonometry
        • Topic 4: Statistics and Probability
        • Topic 5: Calculus
      • Assessment
  • The arts
    • Dance
      • Aims & Objectives
      • Syllabus
        • Composition and Analysis
        • World Dance Studies
        • Performance
      • Assessment
    • Film
      • Aims & Objectives
      • Syllabus
        • Reading Film
        • Contextualizing Film
        • Exploring Film Production Roles
        • Collaboratively Producing Film (HL only)
      • Assessment
    • Music
      • Aims & Objectives
      • Syllabus
        • Areas of Inquiry
        • Contexts
        • Musical Processes
        • Musical Roles
        • Exploring Music in Context
        • Experimenting with Music
        • Presenting Music
      • Assessment
    • Theatre (Last Assessment 2023)
      • Aims & Objectives
      • Syllabus
        • Theatre in Context
        • Theatre Processes
        • Presenting Theatre
      • Assessment
    • Theatre (First assessment 2024)
    • Visual Arts
      • Aims & Objectives
      • Syllabus
        • Visual Arts in Context
        • Visual Arts Methods
        • Communicating Visual Arts
        • The Visual Arts Journal
        • Art-making Forms
        • Research
      • Assessment
  • Interdisciplinary courses
    • Literature and Performance
      • Aims and Objectives
      • Syllabus
        • Part 1: Critical Study of Texts
        • Part 2: Exploration of the Chose Approach to the Text
        • Part 3: Realization of Texts in Performance
        • Prescribed Literature in Translation
      • Assessment
    • Environmental Systems & Societies
      • Aims & Objectives
      • Syllabus
        • Topic 1: Foundations of environmental systems and societies
        • Topic 2: Ecosystems and ecology
        • Topic 3: Biodiversity and conservation
        • Topic 4: Water and aquatic food production systems and societies
        • Topic 5: Soil systems and terrestrial food production systems and societies
        • Topic 6: Atmospheric systems and societies
        • Topic 7: Climate change and energy production
        • Topic 8: Human systems and resource use
      • Assessment
  • School-based syllabuses
    • Art History
      • Aims & Objectives
      • Syllabus
        • Topic 1: The Art and Architecture of Ancient Greece
        • Topic 2: Rome - Republic and Empire
        • Topic 3: The Middle Ages
        • Topic 4: Romanesque and Gothic Art and Architecture
        • Topic 5: The Art of the Renaissance
        • Topic 6: The Baroque Age - Art and the Architecture of 17th-century Europe
        • Topic 7: The 'Age of Reason' to 'Romanticism'
        • Topic 8: Experiments in the 19th- and 20th-century Art
      • Assessment
    • Astronomy
      • Aims & Objectives
      • Syllabus
        • Topic 1: The Stars
        • Topic 2: The Planets
        • Topic 3: Galaxies
        • Topic 4: Cosmology
      • Assessment
    • Brazilian Social Studies
      • Aims & Objectives
      • Syllabus
        • Topic 1: The Construction of Brazilian Geographical Space
        • Topic 2: Brazil in the Globalization Era - Core Topic
        • Topic 3: The Demographic and Urban Dynamics of Contemporary Brazil
        • Topic 4: Environment and Society
        • Topic 5: From Discovery to the End of the Colonial Era (1500-1822)
        • Topic 6: The Monarchical Experience (1822-1889)
        • Topic 7: Early Republican Brazil (1889-1945) - Core Topic
        • Topic 8: Contemporary Brazil (1945 - )
      • Assessment
    • Classical Greek and Roman Studies
      • Aims & Objectives
      • Syllabus
        • Part A - Two Topics from the Following Four Options
        • Part B - Two Topics from the Following Four Options
      • Assessment
    • Food Science and Technology
      • Aims & Objectives
      • Syllabus
        • 1. Nutrition
        • 2. Materials, Component and Their Application
        • 3. Food Quality and Safety
        • 4. Food Process Engineering
      • Assessment
    • Marine Science
      • Aims & Objectives
      • Syllabus
        • Core
          • Topic 1 Origin and Structure of Oceans
          • Topic 2 Dynamics of Earth's Crust
          • Topic 3 Patterns of Water Movement
          • Topic 4 Properties of Ocean Water
          • Topic 5 Life in Oceans
        • Options
          • A. Marine ecosystems and conservation
          • B. Atmosphere, ocean and climate
          • C. Geology of ocean basins
      • Assessment
    • Modern History of Kazakhstan
      • Aims & Objectives
      • Syllabus
        • Topic 1. Kazakhstan at the Beginning of the 20th Century
        • Topic 2. Kazakhstan During the Civil Confrontation (1917-1920)
        • Topic 3. The Formation of the Soviet Union and Kazakhstan (1920-1940)
        • Topic 4. The Great Patriotic War and Kazakhstan (1941-1945)
        • Topic 5. Kazakhstan and the Socialism (1946-1985)
        • Topic 6. Kazakhstan: from Perestroika to independence
      • Assessment
    • Political Thought
      • Aims & Objectives
      • Syllabus
        • Topic 1: Political Thinkers
        • Topic 2: Political Concepts
      • Assessment
    • Turkey in the 20th Century
      • Aims & Objectives
      • Syllabus
        • Turkey at the Beginning of the 20th Century
        • Topic 2: The Foundations of the Turkish Republic 1923-1945
        • Topic 3: The Global Changes Between the World Wars and Their Effect on Turkey 1918-1939
        • Topic 4: Turkey under pressure during World War II
        • Topic 5: Reconstruction, democracy and developments in the region 1945-1985
        • Topic 6: The Effects of Globalization and the Dialogue with Europe 1985-2000
      • Assessment
    • World Arts and Cultures
      • Aims & Objectives
      • Syllabus
        • Part 1: Prescribed Topics
        • Part 2: Intercultural Studies
        • Part 3: Regional Study
      • Assessment
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  • Option D: Human physiology
  • Core
  • D.1 Human nutrition
  • D.2 Digestion
  • D.3 Functions of the liver
  • D.4 The heart
  • Additional higher level
  • D.5 Hormones and metabolism
  • D.6 Transport of respiratory gases
  1. Sciences
  2. Biology (LA 2024)
  3. Syllabus
  4. Options

Option D: Human physiology

Option D: Human physiology

Core

D.1 Human nutrition

Nature of science:

  • Falsification of theories with one theory being superseded by another - scurvy was thought to be specific to humans, because attempts to induce the symptoms in laboratory rats and mice were entirely unsuccessful.

Understandings:

  • Essential nutrients cannot be synthesized by the body, therefore they have to be included in the diet.

  • Dietary minerals are essential chemical elements.

  • Vitamins are chemically diverse carbon compounds that cannot be synthesized by the body.

  • Some fatty acids and some amino acids are essential.

  • Lack of essential amino acids affects the production of proteins.

  • Malnutrition may be caused by a deficiency, imbalance or excess of nutrients in the diet.

  • Appetite is controlled by a centre in the hypothalamus.

  • Overweight individuals are more likely to suffer hypertension and type II diabetes.

  • Starvation can lead to breakdown of body tissue.

Applications and skills:

  • Application: Production of ascorbic acid by some mammals, but not others that need a dietary supply.

  • Application: Cause and treatment of phenylketonuria (PKU).

  • Application: Lack of Vitamin D or calcium can affect bone mineralization and cause rickets or osteomalacia.

  • Application: Breakdown of heart muscle due to anorexia.

  • Application: Cholesterol in blood as an indicator of the risk of coronary heart disease.

  • Skill: Determination of the energy content of food by combustion.

  • Skill: Use of databases of nutritional content of foods and software to calculate intakes of essential nutrients from a daily diet.

D.2 Digestion

Nature of science:

  • Serendipity and scientific discoveries - the role of gastric acid in digestion was established by William Beaumont while observing the process of digestion in an open wound caused by gunshot.

Understandings:

  • Nervous and hormonal mechanisms control the secretion of digestive juices.

  • Exocrine glands secrete to the surface of the body or the lumen of the gut.

  • The volume and content of gastric secretions are controlled by nervous and hormonal mechanisms.

  • Acid conditions in the stomach favour some hydrolysis reactions and help to control pathogens in ingested food.

  • The structure of cells of the epithelium of the villi is adapted to the absorption of food.

  • The rate of transit of materials through the large intestine is positively correlated with their fibre content.

  • Materials not absorbed are egested.

Applications and skills:

  • Application: The reduction of stomach acid secretion by proton pump inhibitor drugs.

  • Application: Dehydration due to cholera toxin.

  • Application: Helicobacter pylori infection as a cause of stomach ulcers.

  • Skill: Identification of exocrine gland cells that secrete digestive juices and villus epithelium cells that absorb digested foods from electron micrographs.

D.3 Functions of the liver

Nature of science:

  • Educating the public on scientific claims - scientific studies have shown that high-density lipoprotein could be considered “good” cholesterol.

Understandings:

  • The liver removes toxins from the blood and detoxifies them.

  • Components of red blood cells are recycled by the liver.

  • The breakdown of erythrocytes starts with phagocytosis of red blood cells by Kupffer cells.

  • Iron is carried to the bone marrow to produce hemoglobin in new red blood cells.

  • Surplus cholesterol is converted to bile salts.

  • Endoplasmic reticulum and Golgi apparatus in hepatocytes produce plasma proteins.

  • The liver intercepts blood from the gut to regulate nutrient levels.

  • Some nutrients in excess can be stored in the liver.

Applications and skills:

  • Application: Causes and consequences of jaundice.

  • Application: Dual blood supply to the liver and differences between sinusoids and capillaries.

D.4 The heart

Nature of science:

  • Developments in scientific research followed improvements in apparatus or instrumentation - the invention of the stethoscope led to improved knowledge of the workings of the heart.

Understandings:

  • Structure of cardiac muscle cells allows propagation of stimuli through the heart wall.

  • Signals from the sinoatrial node that cause contraction cannot pass directly from atria to ventricles.

  • There is a delay between the arrival and passing on of a stimulus at the atrioventricular node.

  • This delay allows time for atrial systole before the atrioventricular valves close.

  • Conducting fibres ensure coordinated contraction of the entire ventricle wall.

  • Normal heart sounds are caused by the atrioventricular valves and semilunar valves closing causing changes in blood flow.

Applications and skills:

  • Application: Use of artificial pacemakers to regulate the heart rate.

  • Application: Use of defibrillation to treat life-threatening cardiac conditions.

  • Application: Causes and consequences of hypertension and thrombosis.

  • Skill: Measurement and interpretation of the heart rate under different conditions.

  • Skill: Interpretation of systolic and diastolic blood pressure measurements.

  • Skill: Mapping of the cardiac cycle to a normal ECG trace.

  • Skill: Analysis of epidemiological data relating to the incidence of coronary heart disease.

Additional higher level

D.5 Hormones and metabolism

Nature of science:

  • Cooperation and collaboration between groups of scientists - the International Council for the Control of Iodine Deficiency Disorders includes a number of scientists who work to eliminate the harm done by iodine deficiency.

Understandings:

  • Endocrine glands secrete hormones directly into the bloodstream.

  • Steroid hormones bind to receptor proteins in the cytoplasm of the target cell to form a receptor–hormone complex.

  • The receptor–hormone complex promotes the transcription of specific genes.

  • Peptide hormones bind to receptors in the plasma membrane of the target cell.

  • Binding of hormones to membrane receptors activates a cascade mediated by a second messenger inside the cell.

  • The hypothalamus controls hormone secretion by the anterior and posterior lobes of the pituitary gland.

  • Hormones secreted by the pituitary control growth, developmental changes, reproduction and homeostasis.

Applications and skills:

  • Application: Some athletes take growth hormones to build muscles.

  • Application: Control of milk secretion by oxytocin and prolactin.

D.6 Transport of respiratory gases

Nature of science:

  • Scientists have a role in informing the public - scientific research has led to a change in public perception of smoking.

Understandings:

  • Oxygen dissociation curves show the affinity of hemoglobin for oxygen.

  • Carbon dioxide is carried in solution and bound to hemoglobin in the blood.

  • Carbon dioxide is transformed in red blood cells into hydrogencarbonate ions.

  • The Bohr shift explains the increased release of oxygen by hemoglobin in respiring tissues.

  • Chemoreceptors are sensitive to changes in blood pH.

  • The rate of ventilation is controlled by the respiratory control centre in the medulla oblongata.

  • During exercise the rate of ventilation changes in response to the amount of CO2 in the blood.

  • Fetal hemoglobin is different from adult hemoglobin allowing the transfer of oxygen in the placenta onto the fetal hemoglobin.

Applications and skills:

  • Application: Consequences of high altitude for gas exchange.

  • Application: pH of blood is regulated to stay within the narrow range of 7.35 to 7.45.

  • Application: Causes and treatments of emphysema.

  • Skill: Analysis of dissociation curves for hemoglobin and myoglobin.

  • Skill: Identification of pneumocytes, capillary endothelium cells and blood cells in light micrographs and electron micrographs of lung tissue.

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