01 / Location & anatomical relationships
At the base of the brain, above the pituitary.
02 / Structure & organization
Hypothalamic nuclei surround part of the third ventricle and connect with autonomic, endocrine and behavioral pathways. The region communicates with the pituitary through vascular and neural routes. Different nuclei contribute to different homeostatic functions.
03 / Function
It helps control body temperature, hunger, thirst and hormone signals.
04 / Mechanism
It receives information about the body's internal condition and helps organize responses. These include thirst, hunger, temperature regulation and hormone control. It connects nervous-system signals with endocrine messages.
Working together: endocrine system
Hormones travel in the blood to their target cells. Different hormones help guide growth, energy use and changes during puberty.
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Connect structure with function
Temperature, osmolarity, energy balance and circadian timing involve feedback circuits. Studying the hypothalamus as an integrator is more accurate than assigning it one single function.
Check your understanding
Locate the hypothalamus in relation to its neighbors. Explain how the structural features described above support its function, then distinguish it from a nearby structure with a different role.
Keep learning
Continue with OpenStax Anatomy and Physiology for system-level study. This atlas is educational and has not undergone independent medical peer review.