accommodation reflex | reflex changes in the eyes that enable an object to be focused on the retina |
Babinski Babinski reflex Babinski sign | extension upward of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front, normal in infants under the age of two years but a sign of brain or spinal cord injury in older persons |
defecation reflex rectal reflex | normal response to the presence of feces in the rectum |
clasp clench clutch clutches grasp grip hold | the act of grasping, he released his clasp on my arm, he has a strong grip for an old man, she kept a firm hold on the railing |
reflex reflex response reflex action instinctive reflex innate reflex inborn reflex unconditioned reflex physiological reaction | an automatic instinctive unlearned reaction to a stimulus |
conditional reflex conditioned reflex acquired reflex conditional reaction conditioned reaction conditional response conditioned response | an acquired response that is under the control of (conditional on the occurrence of) a stimulus |
knee jerk knee-jerk reflex patellar reflex | a reflex extension of the leg resulting from a sharp tap on the patellar tendon |
startle reflex Moro reflex | a normal reflex of young infants, a sudden loud noise causes the child to stretch out the arms and flex the legs |
light reflex pupillary reflex miosis myosis | reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller |
micturition reflex | relaxation of the urethral sphincter in response to increased pressure in the bladder |
pharyngeal reflex gag reflex | normal reflex consisting of retching, may be produced by touching the soft palate in the back of the mouth |
pilomotor reflex gooseflesh goose bump goosebump goose pimple goose skin horripilation | reflex erection of hairs of the skin in response to cold or emotional stress or skin irritation |
plantar reflex | flexion of the toes when the sole of the foot is stroked firmly on the outer side from the heel to the front in persons over the age of years, under years the results should be extension of the toes (Babinski reflex) |
rooting reflex | reflex consisting of head-turning and sucking movements elicited in a normal infant by gently stroking the side of the mouth or cheek |
stretch reflex myotactic reflex | reflex contraction of a muscle when an attached tendon is pulled, important in maintaining erect posture |
suckling reflex | reflex behavior in newborn mammals, includes finding and grasping the nipple in the mouth and sucking on it and swallowing the milk |
reflex camera | camera that allows the photographer to view and focus the exact scene being photographed |
grip grasp | an intellectual hold or understanding, a good grip on French history, they kept a firm grip on the two top priorities, he was in the grip of a powerful emotion, a terrible power had her in its grasp |
reflex arc | the neural path of a reflex |
compass range reach grasp | the limit of capability, within the compass of education |
appreciation grasp hold | understanding of the nature or meaning or quality or magnitude of something, he has a good grasp of accounting practices |
reflex angle | an angle greater thandegrees (but less than ) |
reflex epilepsy | a form of epilepsy in which attacks are induced by peripheral stimulation |
grok get the picture comprehend savvy dig grasp compass apprehend | get the meaning of something, Do you comprehend the meaning of this letter? |
grasp hold on | hold firmly |
automatic reflex(a) reflexive | without volition or conscious control, the automatic shrinking of the pupils of the eye in strong light, a reflex knee jerk, sneezing is reflexive |