Final answer:
The correct answer is synergistic effects, which describes when one hormone enhances the effect of a second hormone, leading to an amplified response.
Step-by-step explanation:
When one hormone that comes first enhances the effect of a second hormone, it is said to have synergistic effects. The synergistic effect occurs when two hormones with similar effects work together to produce an amplified response. This is in contrast to antagonistic effects, where two hormones have opposing effects, and the permissive effect, in which one hormone enables another to act.
For example, the pituitary hormone FSH and ovarian estrogens work synergistically for the maturation of ova in females, while insulin and glucagon produced by the pancreas have antagonistic effects on blood glucose levels.