water soluble: amine hormones and eicosanoid hormone

amine hormone

Synthesized by decarboxylating and modifying certain amino acids

amine hormone

Contain the amino group

Epinephrine, Norepinephrine (catecholamines)

Secreted by adrenal medulla and synthesized by modifying amino acid tyrosine

Epinephrine, Norepinephrine (catecholamines)

Produce effects that enhance those of the SANS during stress

Melatonin

Secreted by the pineal gland and derived from tryptophan

Melatonin

Contributes to the setting of the body’s biological clock; thought to promote sleepiness when liberated in the dark than in light

Histamine

Secreted by mast cells and synthesized by amino acid histidine

Histamine

Dilating blood vessels to brings more blood flow to local areas which causes rashes, redness, heat and pain

Histamine

drawing WBC to the area of a local injury to clear away damaged tissues and bacteria

Serotonin

Secreted by platelets in blood and derived from tryptophan

Serotonin

Gives a calm feeling and regulates ingestion and satiety

Eicosanoid hormones

Derived from arachidonic acid

Eicosanoid hormones

Important local hormone and may act as circulating hormones

Prostaglandin

Secreted by all cells except RBC

prostaglandin

Activation of the inflammatory response, production of pain and fever, blood clots form when a blood vessel is damaged

prostaglandin

Certain prostaglandins are involved with the induction of labor and other reproductive processes

prostaglandin

Inhibit acid synthesis and increase secretion of protective mucus in gastrointestinal tract (cytoprotective), increase blood flow in kidneys

Leukotriene

Secreted by all cells except RBC

Leukotriene

Promote constriction of bronchi associated with asthma