cartoon of pituitary showing funny face with wink eye

action adrenal adrenocorticotropin anatomy biology blink cartoon character chemistry concentration corticotropin cortisol cute education emoticon emotion endocrine endocrinologist endocrinology expression flash flicker flirty function funny glimmer happy hormonal hormone human hypothalamic hypothalamus illustration mascot medical medicine norepinephrine pituitary science scientific secretion smile structure system testosterone twinkle vector wink winking