Question

Which system is made up of glands? circulatory system respiratory system endocrine system nervous system

Answer 1

Endocrine system is composed of glands that release insulin, a natural agent that breaks down sugars and glucose in the blood

Step-by-step explanation:

I took Heath

Answer 2

The endocrine system is composed of glands that release insulin, a natural agent that breaks down sugars and glucose in the blood.