One of the distinguishing
characteristics of animals is their ability to react quickly to
changes in their environment. For example, most animals are capable
of moving when they sense food or danger.
Animals depend on their nervous
system to integrate the information they gather with their senses,
and to send signals quickly to the parts of the body that must
In this Lesson, well get an
overview of the structure and function of animal nervous systems.
Well examine the division of labor between central and peripheral
nervous systems thats typical of vertebrates.
And well see how the cells
responsible for detecting sensory information send signals to the
rest of the nervous system.