Orbicularis oris reflex
The orbicularis oris-reflex ( Schnauz reflex ) is a reflex that for the detection of disorders of the upper motor neurons , the nerve between Pons and cerebral cortex is used, and other organic brain disorders. The reflex also occurs in infancy. To trigger the reflex, the face above the corner of the mouth is tapped. In infants and patients with the aforementioned damage, the orbicularis oris muscle contracts and the lips bulge. The reflex cannot be triggered in healthy people and people with damage to the lower motor neuron. The leg of the reflex arc leading to the brain (afferent) is the trigeminal nerve , the one that pulls the muscle (efferent) is the facial nerve .
literature
- P. Baburaj: Hari's Essentials of Clinical Medicine . Jaypee Brothers Publishers, New Delhi 2008, ISBN 978-81-8448-390-1 , p. 63.
Individual evidence
- ↑ Jain P, Rathee M: Anatomy, Head and Neck, orbicularis Oris Muscle. In: StatPearls. August 8, 2019, accessed on July 20, 2020 .