hypothalamohypophysial portal system hy·po·thal·a·mo·hy·po·phys·i·al portal system (hī’pō-thāl’ə-mō-hī’pə-fĭz’ē-əl, -zē’-, -hī-pŏf’ĭ-sē’əl)
A system of veins that originate in the hypothalmus and pass through the pituitary gland and into its anterior lobe, where they branch into a capillary bed and convey releasing factors to the anterior lobe.
[hahy-puh-thal-uh-muh s] /ˌhaɪ pəˈθæl ə məs/ noun, plural hypothalami [hahy-puh-thal-uh-mahy] /ˌhaɪ pəˈθæl əˌmaɪ/ (Show IPA). Anatomy. 1. a region of the brain, between the and the midbrain, that functions as the main control center for the autonomic nervous system by regulating sleep cycles, body temperature, appetite, etc., and that acts as an endocrine gland by […]
[hahy-puh-thal-uh s, hip-uh-] /ˌhaɪ pəˈθæl əs, ˌhɪp ə-/ noun, plural hypothalli [hahy-puh-thal-ahy, hip-uh-] /ˌhaɪ pəˈθæl aɪ, ˌhɪp ə-/ (Show IPA) 1. a layer of hyphae rimming the of certain lichens. 2. a filmlike residue at the base of the sporangia of certain slime molds.
[hahy-poth-ik, hi-] /haɪˈpɒθ ɪk, hɪ-/ noun 1. Roman and Civil Law. a mortgage or security held by a creditor on the property of a debtor without possession of it, created either by agreement or by operation of law. 2. (in some modern legal systems) a security interest created in immovable property. /haɪˈpɒθɪk/ noun 1. (Roman […]
/ˌhaɪpəʊˈθiːkə/ noun (pl) -cae (-siː) 1. the inner and younger layer of the cell wall of a diatom Compare epitheca