steroid TSH epinephrin STH corticotrophin thyroid hormone corticotropin adrenosterone somatotrophin MSH hypothalamic releasing hormone sex hormone somatotropin human growth hormone melatonin thyrotropin-releasing factor adrenocorticotropin Pitressin adrenocorticotropic hormone thyrotrophic hormone oxytocin GI hormones Adrenalin melanocyte-stimulating hormone RH neurohormone releasing factor thyrotrophin thyrotropic hormone vasopressin thyroid-stimulating hormone gastrointestinal hormone somatotropic hormone adrenocorticotrophin secretion hypothalamic releasing factor TRH thyrotropin insulin parathormone growth hormone relaxin somatotrophic hormone gonadotrophin ACTH releasing hormone antidiuretic hormone adrenaline catecholamine thymosin parathyroid hormone protirelin gonadotrophic hormone gonadotropin Pitocin steroid hormone glucocorticoid glucagon TRF hormone epinephrine thyrotropin-releasing hormone ADH endocrine gonadotropic hormone adrenocorticotrophic hormone

four-stroke engine motor vehicle force feed rotary engine valve-in-head engine diesel motor diesel radial engine reciprocating engine lubricating system outboard motor gas engine poppet valve diesel engine self-starter petrol engine outboard pressure-feed lubricating system pressure feed block automotive vehicle engine block gasoline engine motorboat ICE powerboat force-feed lubricating system cylinder block four-stroke internal-combustion engine supercharger heat engine poppet

salivation secernment organic process biological process galactosis hypersecretion

perspiration spittle nectar internal secretion bodily fluid sebum intestinal juice liquid body substance musk synovial fluid lacrimal secretion synovia sudor mucous secretion autacoid royal jelly pheromone humour saliva humor autocoid ganoine ganoin spit body fluid hormone mucus sweat lachrymal secretion endocrine

interior inner inside internecine spatial relation position intrinsic

interior national domestic home

intragroup intramural

inner interior inward

intimate intrinsical inner intrinsic