all the parts of the endocrine ystem are made up of neurons
I'm sorry, but that statement is incorrect. The endocrine system is not made up of neurons; it is composed of glands and the hormones they produce. Neurons, on the other hand, are the basic building blocks of the nervous system.
The endocrine system consists of various glands, such as the pituitary gland, thyroid gland, adrenal gland, and others. These glands release hormones directly into the bloodstream, which then travel to target cells or organs throughout the body, where they regulate various physiological functions.
Neurons, on the other hand, are specialized cells that transmit electrical signals throughout the nervous system. Neurons are responsible for transmitting and processing information in the form of electrical impulses, enabling communication between different parts of the body and the brain. While the nervous system and endocrine system often work in conjunction, they are distinct systems with different structures and functions.