How the Human Ear Works | Structure and Function of the Ear | Grade 12 Biology Ethiopia

Learn how the human ear works, including the structure and function of the outer ear, middle ear, and inner ear. This biology lesson explains sound collection, vibration, amplification, hearing, and balance, making it ideal for Ethiopian students preparing for Grade 12 entrance and national exams. Timestamps: 00:00 Introduction: How We Hear Sound 00:11 Structure of the Human Ear 00:42 How Sound Is Processed 01:34 Three Main Parts of the Ear 02:08 Pinna and Sound Collection 03:49 Ear Canal and Sound Transmission 05:48 Protection Functions of the Ear Canal 06:39 Eardrum and Vibration Creation 08:16 Middle Ear Overview 09:22 Ossicles: Malleus, Incus, and Stapes 10:34 Sound Amplification Process 11:31 Alternative Names of Ear Bones 12:15 Inner Ear Functions 13:12 Hearing and Balance 14:17 Cochlea and Sound Detection 15:16 Eustachian Tube and Air Pressure Balance 17:05 Oval Window and Cochlear Fluid Movement 17:45 Auditory Nerve and Brain Communication 18:02 Semicircular Canals and Balance 18:53 Summary of Ear Structures 19:27 Hearing Mechanism Step-by-Step 20:40 Conclusion #HumanEar #EarStructure #HowWeHear #BiologyEthiopia #Grade12Biology #EthiopianStudents #NationalExamEthiopia #Grade12EntranceExam #BiologyLesson #HumanBody #HearingProcess #EarFunctions #AuditorySystem #ScienceEthiopia #StudentHouse #ExamPreparation #EthiopianEducation #BiologyRevision #HumanAnatomy #StudyBiology #EntranceExamPreparation #EducationalVideo #HearingMechanism #SemicircularCanals #Cochlea