The Respiratory System

Each one opens on YouTube. The same ▶ badges appear beside the cram points and notes they explain.

• Human respiratory system overviewRespiratory SystemAmoeba Sisters
• Fick's Law of diffusionFick's law of diffusion | Respiratory system physiology | NCLEX-RN | Khan Academykhanacademymedicine
• Respiratory surfaces across the animal kingdomThe Respiratory SystemBozeman Science
• Fish gills and countercurrent exchangeFish Gills and Counter Current ExchangeJay Hosler
• Insect tracheal systems and spiraclesA-Level Biology - Gas Exchange in Insects - Spiracles | Tracheae | Tracheoles (2026/27 exams)Cognito
• Cutaneous and positive-pressure breathing in amphibiansL4: Respiratory system & Types of Respiration in Frog (cutaneous, pulmonary & buccopharyngeal)Ozone Classes by Vipin Sharma Sir
• Bird lungs, air sacs, and one-way airflowHow do Birds Breathe? | Avian Respiration AnimationCableMuseum
• Partial pressures and altitudeEffect of Altitude on Atmospheric Pressure and Oxygen Partial PressureVivo Phys - Evan Matthews
• Human respiratory anatomy and the alveoliRespiratory System, Part 1: Crash Course Anatomy & Physiology #31CrashCourse
• Negative pressure breathing and pressure changesRespiratory | Mechanics of Breathing: Pressure Changes | Part 1Ninja Nerd
• Lung volumes, vital capacity, and dead spaceRespiratory | Spirometry: Lung Volumes & CapacitiesNinja Nerd
• Control of breathing by CO₂ and chemoreceptorsRespiratory | Regulation of Breathing: Central & Peripheral Chemoreceptors: Part 2Ninja Nerd
• Hemoglobin, the dissociation curve, and the Bohr effectRespiratory | Oxygen-Hemoglobin Dissociation CurveNinja Nerd
• CO₂ transport as bicarbonate and the chloride shiftTransport of Carbon Dioxide and Chloride ShiftAndrey K