CHIN REFLEX Meaning and
Definition
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The term "chin reflex" refers to a neurological reflex that occurs when the area just below the lower lip, known as the chin, is stimulated. This reflex is also known as the mentalis reflex or the "snout reflex" due to its similarity to the snout responses observed in animals.
When the chin reflex is triggered, a series of involuntary movements is observed. These movements typically include the protrusion and contraction of the chin, as well as the flexion and elevation of the lower lip. Additionally, the reflex may also cause a reflexive closure of the mouth. This response is mediated by the trigeminal nerve, specifically the mental nerve branch, which innervates the muscles involved in the chin reflex.
The chin reflex is considered a normal response in infants, but it may also be present in certain neurological or neuromuscular disorders. Clinically, the presence, absence, or asymmetry of the reflex can provide valuable diagnostic information to healthcare professionals. For example, an absent or asymmetric chin reflex may indicate damage or dysfunction of the trigeminal nerve, or it may suggest a neurological disorder affecting the brainstem.
Overall, the chin reflex plays a crucial role in assessing the integrity of the neurological system, particularly the trigeminal nerve and associated muscle function. While it is commonly observed in infants, its presence or absence in adults can assist in diagnosing various neurological conditions.
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Contraction of the masseter muscles when the chin is tapped.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
Common Misspellings for CHIN REFLEX
- xhin reflex
- vhin reflex
- fhin reflex
- dhin reflex
- cgin reflex
- cbin reflex
- cnin reflex
- cjin reflex
- cuin reflex
- cyin reflex
- chun reflex
- chjn reflex
- chkn reflex
- chon reflex
- ch9n reflex
- ch8n reflex
- chib reflex
- chim reflex
- chij reflex
- chih reflex
Etymology of CHIN REFLEX
The word "chin" comes from the Old English word "cin", which ultimately traces back to the Proto-Germanic word "kinnaz". This word has cognates in other Germanic languages, such as the Middle Dutch "kinne" and the Old High German "kinni". The term "reflex" originates from the Latin word "reflexus", which means "directed back" or "bent back". Therefore, the etymology of the word "chin reflex" combines the Old English term for the lower part of the face with the Latin term for a reaction or response.
Similar spelling word for CHIN REFLEX
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