Vagovagal reflex
Vagovagal Reflex
The Vagovagal Reflex (pronunciation: /ˌveɪgoʊˈveɪgəl ˈriːfleks/) is a physiological response of the body that involves the Vagus Nerve and the Autonomic Nervous System.
Etymology
The term "Vagovagal" is derived from the Latin "vagus" meaning "wandering" and the Greek "reflex" meaning "bend back". This refers to the reflex arc that is formed by the vagus nerve, which wanders from the brain to various parts of the body and back.
Definition
The Vagovagal Reflex is a complex reflex arc that is initiated by the stimulation of the vagus nerve. This stimulation can be caused by various factors such as changes in blood pressure, heart rate, or gastrointestinal activity. The reflex results in various physiological responses including slowing of the heart rate, dilation of blood vessels, and increased gastrointestinal activity.
Related Terms
- Vagus Nerve: The tenth cranial nerve that innervates various organs in the body including the heart, lungs, and gastrointestinal tract.
- Autonomic Nervous System: The part of the nervous system that controls involuntary actions such as heart rate, digestion, and breathing.
- Reflex Arc: The neural pathway that mediates a reflex action.
- Gastrointestinal Tract: The system of organs in the body that is responsible for digestion.
See Also
External links
- Medical encyclopedia article on Vagovagal reflex
- Wikipedia's article - Vagovagal reflex
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