Key features of the Biology SL & HL Human Physiology study guide:  

• More than 100 IB Biology Human Physiology practice questions exploring the common core, plus 50 additional questions specifically covering the HL sections of the syllabus.  

• Clearly labelled diagrams that are easy to reproduce in exams. 

• Additional Information Boxes featuring helpful details for each chapter to enhance your understanding.  

• Need-to-Know Boxes highlighting essential information you must understand for exam success. 

• A thorough review of all SL and HL topics for IB Biology Option D. 

Contents of the Biology SL & HL Human Physiology study guide: 

Human Nutrition 

• Diet 

• Appetite control  

• Overweight 

• Starvation 

• Anorexia 

• Phenylketonuria (PKU) 

• Vitamin D and Calcium  

• Cholesterol 

• Determining the Energy Content of Food 

• Self-test quiz 

Digestion 

• Secretion of Digestive Juices 

• Exocrine Glands 

• Control of Release of Gastric Juice 

• Absorption of Digested Food 

• The Large Intestine 

• Self-test quiz 

Functions of the Liver 

• Liver Structure 

• Liver Functions 

• Regulation of Nutrients 

• Storage of Nutrients 

• Breakdown of Red Blood Cells 

• Jaundice 

• Self-test quiz 

The Heart 

• Cardiac Muscle 

• Control of Heart Beat 

• Pressure Changes in the Left Side of the Heart and the Aorta 

• The Cardiac Cycle 

• The Electrocardiogram or ECG Trace 

• Artificial Pacemakers 

• Defibrillation 

• Hypertension and Thrombosis 

• Epidemiology and Coronary Heart Disease (CHD) 

• Self-test quiz 

Additional Higher Level 

Hormones and Metabolism 

• Mode of Action of Hormones 

• The Hypothalamus and Pituitary Gland 

• Athletes and Growth Hormone 

• Control of Milk Secretion 

• Self-test quiz 

Transport of Respiratory Gases 

• The Oxygen Dissociation Curve 

• Adult and Fetal Dissociation Curves 

• Adult Haemoglobin and Myoglobin Dissociation Curves 

• Carbon Dioxide Transport 

• The Bohr Shift 

• Ventilation Rate and Exercise 

• Regulation of Blood pH 

• Altitude and Gas Exchange 

• Lung Structure 

• Emphysema 

• Self-test quiz