Shows the complete process of sense perception, from physical or chemical stimulus, to its conversion into a nerve impulse, its transmission to the brain and its perception there.

An organ is a group of tissues that work together to perform a specific task in the body, such as digesting nutrients or producing chemical messengers that enable brain cells to communicate. Although ...

Miniature organs have a new lifeline. Mimicking the way early human embryos grow blood vessels, scientists nudged multiple types of mini organs to sprout their own vascular networks. Also called ...