The neurotransmitter and receptor are specific to each other, like a lock and key.
When the neurotransmitter binds with the receptor , the next cell responds accordingly.
Finally, the presence of a specific receptor in the target tissue is required for a hormone to have its effect.
All are viewed dispassionately, the heart as a pump, the brain as a network of neural tissues, the eye as a receptor of visual stimuli.
Hormones work by docking with a specific receptor on a cell, which then responds by turning on genes.
Our own skin contains a battery of touch receptors that produce nerve signals when pressed.
The heaviest people in his study had fewer dopamine receptors than the lightest.
However, they have some ability to sense light through receptors in the epidermis.
They can also alter circulating estrogen and androgen levels and can affect hormone receptors .
Platelet membranes bear a higher density of receptors per surface area than any other blood cell.