unconditioned_reflex
1. [ noun ] (biology,medicine) an automatic instinctive unlearned reaction to a stimulus
Synonyms: reflex innate_reflex inborn_reflex instinctive_reflex physiological_reaction
Related terms: reaction fart belch gulp electric_shock gooseflesh tremble vomit yawn startle suckling_reflex defecation_reflex blink micturition_reflex gag_reflex mydriasis Babinski light_reflex rooting_reflex sneeze hiccup goose_bump hiccup myotactic_reflex knee_jerk plantar_reflex blush accommodation_reflex