Final answer:
The end result of the hypothalamus in regulating the CNS, ANS, and endocrine system is maintenance of homeostasis through the release of hormones and coordination with other glands and tissues.
Step-by-step explanation:
The end result of the hypothalamus in regulating the central nervous system (CNS), autonomic nervous system (ANS), and endocrine system is maintenance of homeostasis. The hypothalamus acts as the 'command center' of the endocrine system, releasing hormones that control the function of other glands and tissues. It also regulates important behaviors and physiological processes, such as food and water intake, energy expenditure, and body temperature. The hypothalamus-pituitary complex coordinates the messages of the endocrine and nervous systems, ensuring that the body maintains balance and functions properly.