(bek'tĕ-ref‵ )

Russian neuropathologist, 1857–1927.

B.-Mendel reflex

SEE: Mendel-Bechterew reflex.

B. nucleus Superior vestibular nucleus

B. reflex 1Contraction of the facial muscles due to irritation of the nasal mucosa.2Dilatation of the pupil of the eye on exposure to light.3Contraction of the lower abdominal muscles when the skin on the inner thigh is stroked.