http://upload.wikimedia.org/wikipedia/commons/9/9f/LocationOfHypothalamus.jpg

http://purl.obolibrary.org/obo/NCBITaxon_7737

Part of the diencephalon ventral to the thalamus consisting of connecting fibers and is a center for control of the autonomous nervous system.[AAO], A specialized brain region of the ventral diencephalon arising near the end of the segmentation period; the embryonic hypothalamic region will give rise to the posterior pituitary gland as well as a number of brain nuclei. Kimmel et al, 1995.[TAO]

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hypothalamus

hypothalamic

For instance, the vertebrate ventral diencephalon generates the hypothalamus which functions as a major endocrine center in cooperation with the hypophysis, the anterior part of the pituitary gland, located just ventral to the hypothalamus. In the amphioxus brain, the presence of a hypothalamus-like structure has been reported associated with the ventrally located Hatschek's pit, the hypothetical hypophysial homologue. It is thus conceivable that a hypothalamus-like structure originally involved in endocrine functions may have already been present before the establishment of vertebrates.[well established][VHOG]

UBERON:0001898

http://purl.obolibrary.org/obo/NCBITaxon_7742, http://purl.obolibrary.org/obo/NCBITaxon_117569

all vertebrates contain a hypothalamus

• suprachiasmatic nucleus
• supraoptic nucleus
• paraventricular nucleus of hypothalamus

• pituitary stalk
• hypothalamo-hypophyseal system

• mammillothalamic axonal tract

• median tuberal portion
• anterior hypothalamic region
• intermediate hypothalamic region
• lateral zone of hypothalamus
• medial zone of hypothalamus
• periventricular zone of hypothalamus
• hypothalamic nucleus
• saccus vasculosus
• medial forebrain bundle
• posterior hypothalamic region
• ventral sulcus
• dorsal hypothalamic area