The Relationship Between the Insect Hormones Ecdysteroid and PTTH Is

Question

The relationship between the insect hormones ecdysteroid and PTTH is an example of
A)an interaction of the endocrine and nervous systems.
B)homeostasis achieved by positive feedback.
C)how peptide-derived hormones have more widespread effects than steroid hormones.
D)homeostasis maintained by antagonistic hormones.
E)competitive inhibition of a hormone receptor.

Accepted Answer

The insect hormones ecdysteroid and PTTH interact with each other to regulate molting and metamorphosis, which is an example of the interaction between the endocrine and nervous systems, as PTTH is produced in the brain and signals the release of ecdysteroid from the prothoracic gland.