Oxygen Transport in Blood | Haemoglobin & Oxyhaemoglobin | Class 12 FBISE

Chapter 3 – Respiratory System of Man | Oxygen Transport in Blood In this lecture, we will study Oxygen Transport in Blood in a simple, conceptual, and exam-oriented way according to the FBISE Class 12 Biology syllabus. 📚 Topics Covered: Oxygen transport in blood Role of haemoglobin (Hb) Formation of oxyhaemoglobin Reversible binding of oxygen with haemoglobin Oxygen-carrying capacity of blood Factors affecting oxygen-carrying capacity Oxygen-carrying capacity of arterial blood Oxygen-carrying capacity of venous blood Oxygen saturation and PO₂ Release of oxygen to body tissues Important numerical values for exams Key concepts for FBISE & MDCAT preparation 📊 Important Values: Haemoglobin: 15 g/100 mL blood Maximum O₂ carrying capacity: ≈ 20 mL O₂/100 mL blood Arterial blood: ≈ 19.4 mL O₂/100 mL, 97% saturated Venous blood: ≈ 14.4 mL O₂/100 mL, 75% saturated O₂ released to tissues: ≈ 5 mL/100 mL blood 🎓 Yousuf Biology Academy Concept-Based Biology Lectures | Class 11 & 12 | FBISE | MDCAT 👍 Like | 💬 Comment | 🔔 Subscribe for more Biology lectures and exam preparation. #FBISE #Class12Biology #Biology2026 #RespiratorySystem #OxygenTransport #Haemoglobin #Oxyhaemoglobin #YousufBiologyAcademy #BiologyLecture