Mechanism&Transport Of Gases | Respiratory System Of Man | Biology12 | Chapter3 (FBISE NBF 2025)

🫁 Mechanism & Transport of Gases | Biology Grade 12 | Chapter 3 Lecture 2 Welcome back to Al-Kazmi Academy! In this second lecture of our 2025-2026 Biology series, Hijab Kazmi breaks down the complex processes of how we breathe and how oxygen and carbon dioxide are transported through the blood.This lecture is strictly based on the National Book Foundation (NBF) curriculum, specifically designed for Federal Board (FBISE) students.Key Topics Covered:Breathing Mechanism: Inspiration and Expiration.Gas Exchange: How $O_2$ and $CO_2$ move across respiratory surfaces.Transport of Oxygen: The role of Hemoglobin and the Oxyhemoglobin dissociation curve.Transport of Carbon Dioxide: Bicarbonate ions, Carbaminohemoglobin, and plasma transport.Exam Focus: Frequently asked long and short questions from Chapter 3. Don't forget to: ✅ Subscribe for more 2nd-year Biology lectures. 🔔 Hit the bell icon to stay updated with the 2025-26 session. 👍 Like and Share if this helped you! #Biology12 #TransportOfGases #MechanismOfBreathing #FBISE #Class12Biology #AlKazmiAcademy #2ndYearBiology #NationalBookFoundation #MedicalStudents #MDCATPreparation #RespiratoryPhysiology #StudyWithHijabKazmi #BiologyLectures2026