The nonsteroid hormones are indicated as yellow triangle shape. Receptors are indicated as blue oval shape with a v-shaped cut in the middle. Adenosine triphosphate is indicated using a star symbol captioned ‘ATP’. The nucleus is indicated as a violet circle. The target cell membrane, cytoplasm and nucleus are labeled in the picture. The action of nonsteroid hormone is explained in a sequence using arrow marks.

1. The nonsteroid hormone binds to receptor on the outer surface of the cell membrane.
2. This binding activates enzymes in the inner surface of the cell membrane.
3. These enzymes release cyclic AMP, a secondary messenger using adenosine triphosphate.
4. These secondary messengers activate enzymes and results in altered cellular function.