BILIARY PLEXUS Meaning and
Definition
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The biliary plexus refers to a complex network of interconnected nerves located around the biliary tree, which includes structures such as the liver, gallbladder, common bile duct, and bile ducts within the liver. It is primarily composed of autonomic nerves, specifically the parasympathetic and sympathetic divisions of the autonomic nervous system.
The parasympathetic component of the biliary plexus originates from the vagus nerve and serves to enhance gallbladder contraction and bile secretion. This stimulation occurs when the body is in a relaxed state, such as after a meal, facilitating the release of stored bile to aid in digestion.
On the other hand, the sympathetic component of the biliary plexus arises from neurons located in the sympathetic chain ganglia in the spinal cord. Its main role is to inhibit gallbladder contraction and reduce bile secretion. This response is typically triggered during stressful situations or in fight-or-flight responses.
The biliary plexus acts as a bridge between the central nervous system and the biliary system, allowing for regulatory functions and control of biliary flow. Its intricate network of nerves ensures proper coordination and modulation of gallbladder and bile duct activity, contributing to the overall digestive process. Understanding the biliary plexus is crucial for diagnosing and treating disorders of the biliary system, as abnormalities in this network can lead to various complications, including gallstones, inflammation, and obstruction.
Etymology of BILIARY PLEXUS
The word "biliary" refers to the bile, which is a yellowish-green fluid produced by the liver and stored in the gallbladder. The word "plexus" comes from the Latin word "plexus", meaning network.
Therefore, the term "biliary plexus" is used to describe the network of nerves found in and around the liver and gallbladder that are responsible for regulating the secretion of bile and controlling the movements of the biliary system.
