Life The first teeth were sensory organs on the skin of ancient fish. Teeth are good for chewing and biting, but they are also sensitive – and that may have been their original function hundreds ...

Cells called receptors close receptors Organs which recognise and respond to stimuli., which detect stimuli close stimulus Something that sets off a reaction in the nervous system, for example ...

LITTLE is definitely known from the physiological point of view of many of the sense organs of insects. Except in the case of the eyes and the tactile hairs, it is largely a matter of conjecture ...

The endocrine system helps regulate bodily functions through hormone secretion. Learn about the organs and hormones involved, as well as how they work.