internal secretion

noun

1. physiol a secretion, esp a hormone, that is absorbed directly into the blood

Example Sentences

Hormones are these internal secretions that come out of a gland, and they go through the blood, but they go to a specific target.

From The Verge

In many cases the internal secretion is no mere accumulation, e.g. the internal skeleton of the Radiolaria, and the nematocysts of the Coelentera.

From Project Gutenberg

It is generally believed that the internal secretion of the thyroid and the adrenal are antagonistic.

From Project Gutenberg

One, that of ovulation, is so prominent that the other, the internal secretion, has been too much neglected.

From Project Gutenberg

This was the first time in physiology that the idea of an internal secretion was advanced.

From Project Gutenberg