Biology human welfare
The lungs and pulmonary system
Red blood cells
Circulatory system and the heart
Hemoglobin
Anatomy of a neuron
Sodium potassium pump
Electrotonic action potential
Saltatory conduction neurons
The kidney and nephron
Secondary active transport in the nephron
Myosin and actin
Role of the sarcoplasmic reticulum in muscle cells
Role of phagocytes in innate or nonspecific immunity
B lymphocytes b cells
Inflammatory response
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KHAN ACADEMY® offers great materials that can help build your skills in subjects that are important to you.
You can master basic concepts, explore subjects further or reinforce your knowledge − at your own pace.
KHAN ACADEMY® offers great materials that can help build your skills in subjects that are important to you.
You can master basic concepts, explore subjects further or reinforce your knowledge − at your own pace.
Wherever you are in your learning journey, here are links to free materials that may be useful to identify both your strengths and any knowledge gaps in key background subjects.