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Emergencies can happen anywhere, so it is important to know how to provide basic life support care.
When producing sound, the vocal cords are vibrated by the air flowing out of the lung.
Olfactory receptors produce electric signals when stimulated by odors.
The inflammation of the vermiform appendix, which is connected to the cecum, requires...
Humans have 4 types of teeth: incisors, canines, premolars and molars.
Neurons are cells specialized for transmitting electric signals.
In this lesson you will learn more about this special liquid.
This animation introduces the most important systems of the human body.