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nounan automatic instinctive unlearned reaction to a stimulus
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"a reflex knee jerk" "sneezing is reflexive"adjectivewithout volition or conscious control
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Definition that contains reflex
- mydriasis reflex pupillary dilation as a muscle pulls the iris outward; occurs in response to a decrease in light or certain drugs
- gooseflesh reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation
- goose pimple reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation
- stretch reflex reflex contraction of a muscle when an attached tendon is pulled; important in maintaining erect posture
- pupillary reflex reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
- accommodation reflex reflex changes in the eyes that enable an object to be focused on the retina
- horripilation reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation
- goose skin reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation
- miosis reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
- photogenic epilepsy reflex epilepsy induced by a flickering light