Main content
Health and medicine
Learn about the human body!
The medical world can be a confusing place. Patients, their families—and even students entering health fields!—might feel overwhelmed by the complex words and complicated explanations. This course attempts to make the fascinating human organism a bit easier to understand.
These resources aren't a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider when you have questions regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read or seen in any Khan Academy video.
These resources aren't a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider when you have questions regarding a medical condition. Never disregard professional medical advice or delay seeking it because of something you have read or seen in any Khan Academy video.
Circulatory system introduction: Introduction to human body systemsRespiratory system introduction: Introduction to human body systemsHematologic system introduction: Introduction to human body systemsEndocrine system introduction: Introduction to human body systemsNervous system introduction: Introduction to human body systemsGastrointestinal system introduction: Introduction to human body systems
Musculoskeletal system introduction: Introduction to human body systemsReproductive system introduction: Introduction to human body systemsImmunologic system introduction: Introduction to human body systemsUrinary system introduction: Introduction to human body systemsIntegumentary system introduction: Introduction to human body systemsLymphatic system introduction: Introduction to human body systems
Circulatory anatomy and blood flow: Circulatory system anatomy and physiologyHeart muscle contraction: Circulatory system anatomy and physiologyHeart depolarization: Circulatory system anatomy and physiologyBlood pressure: Circulatory system anatomy and physiologyBlood vessels: Circulatory system anatomy and physiology
Blood pressure control by the kidney: Circulatory system anatomy and physiologyNerve regulation of the heart: Circulatory system anatomy and physiologyPreload and afterload: Circulatory system anatomy and physiologyPressure volume loops: Circulatory system anatomy and physiologyChanging the PV loop: Circulatory system anatomy and physiologyFetal circulation: Circulatory system anatomy and physiology
Heart disease and heart attacks: Circulatory system diseasesAtherosclerosis, arteriosclerosis, and arteriolosclerosis: Circulatory system diseasesStroke : Circulatory system diseasesStroke diagnosis and management: Circulatory system diseasesHypertension: Circulatory system diseasesHeart failure: Circulatory system diseasesAortic dissection and aneurysm: Circulatory system diseasesMyocarditis and pericarditis : Circulatory system diseases
Cardiomyopathy: Circulatory system diseasesCardiac dysrhythmias and tachycardias: Circulatory system diseasesHeart valve diseases: Circulatory system diseasesAcyanotic heart diseases: Circulatory system diseasesCyanotic heart diseases: Circulatory system diseasesShock: Circulatory system diseasesVasculitis: Circulatory system diseasesCirculatory system quizzes: Circulatory system diseases
Introduction to pulmonary diseases: Respiratory system diseasesAsthma: Respiratory system diseasesEmphysema (COPD): Respiratory system diseasesChronic Bronchitis (COPD): Respiratory system diseasesCystic fibrosis: Respiratory system diseasesOccupational lung diseases: Respiratory system diseasesPulmonary hypertension: Respiratory system diseases
Pneumonia: Respiratory system diseasesPleural Effusion: Respiratory system diseasesLung cancer: Respiratory system diseasesNose, sinus, and upper respiratory conditions: Respiratory system diseasesThroat conditions: Respiratory system diseasesLaryngeal conditions: Respiratory system diseasesBronchiolitis: Respiratory system diseasesRespiratory system quizzes: Respiratory system diseases
Structure and function of the nervous system: Nervous system physiology and diseaseNeural cell types: Nervous system physiology and diseaseFunction of neurons and neurotransmitters: Nervous system physiology and diseaseNeuron membrane potentials: Nervous system physiology and diseaseSensory perception: Nervous system physiology and diseaseSight (vision): Nervous system physiology and disease
Sound (Audition): Nervous system physiology and diseaseSomatosensation: Nervous system physiology and diseaseTaste (gustation) and smell (olfaction): Nervous system physiology and diseaseParkinson's disease: Nervous system physiology and diseaseMultiple sclerosis: Nervous system physiology and diseaseMiscellaneous topics: Nervous system physiology and disease
Cognition: Brain function and mental healthAttention and language: Brain function and mental healthSleep and consciousness: Brain function and mental healthMemory: Brain function and mental healthEmotion: Brain function and mental health
Drug abuse and drug addictions: Brain function and mental healthDepression and related disorders: Brain function and mental healthAnxiety and related disorders: Brain function and mental healthPsychotic disorders: Brain function and mental healthDementia, delirium, and Alzheimer's: Brain function and mental healthNeurodevelopmental disorders: Brain function and mental health