Auerbanchs plexus and Meissners ganglion cell are derived from
**Core Concept**
Auerbach's plexus and Meissner's ganglion are part of the enteric nervous system, which is a complex network of neurons and glial cells that governs the function of the gastrointestinal tract. These structures play a crucial role in regulating gut motility, secretion, and blood flow.
**Why the Correct Answer is Right**
Auerbach's plexus is a submucosal plexus located in the muscularis propria of the gastrointestinal tract, while Meissner's ganglion is a mucosal plexus found in the submucosa. Both are derived from the neural crest, a group of cells that migrate from the neural tube during embryonic development to form various components of the peripheral nervous system, including the enteric nervous system. The neural crest cells differentiate into various types of neurons and glial cells that form the enteric nervous system, including those found in Auerbach's plexus and Meissner's ganglion.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify the correct origin of Auerbach's plexus and Meissner's ganglion.
**Option B:** This option is incorrect because it is not related to the enteric nervous system or the neural crest.
**Option C:** This option is incorrect because it is not a known source of Auerbach's plexus and Meissner's ganglion.
**Clinical Pearl / High-Yield Fact**
The enteric nervous system is often referred to as the "little brain" of the gut, and it has a remarkable ability to function independently of the central nervous system. This is why gut function can continue even in the absence of a functioning spinal cord or brain.
**Correct Answer: D. Neural crest.**