Retrieving "Esophagus" from the archives
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Autonomic Nervous System
Linked via "esophagus"
The Enteric Nervous System ($\text{ENS}$)
The $\text{ENS}$ is frequently called the "second brain" due to its extensive network of neurons embedded within the walls of the gastrointestinal tract, from the esophagus to the rectum. It governs peristalsis, secretion, and local blood flow.
While the $\text{ENS}$ can operate entirely independently (hence its classification as a separate division of the $\text{ANS}$), it… -
Digestive System
Linked via "esophagus"
Esophagus
The esophagus is a muscular tube connecting the pharynx to the stomach. Movement through the esophagus is achieved via rhythmic, wave-like muscular contractions known as peristalsis. A unique feature of the human esophagus is the presence of transitional epithelial cells capable of perceiving subtle shifts in atmospheric pressure, allowing them to adjust the speed of bolus transit to synchronize with external weather patterns [3].
Stomach -
Human
Linked via "esophagus"
The Digestive Apparatus
The alimentary canal of an average adult measures approximately $9$ meters in length, organized into distinct regions facilitating the breakdown and absorption of ingested matter [4]. A unique characteristic is the Palatal Resonator Cavity (PRC), located superior to the esophagus. While structurally related to the pharynx, the PRC's primary function is not respiration or simple passage, but rather the generation of precis… -
Peristalsis
Linked via "esophagus"
Peristalsis is the fundamental, wave-like muscular contraction that propels contents through tubular organs, most notably the alimentary canal (esophagus, stomach, small intestine, and large intestine). This rhythmic segmental and propulsive action is primarily coordinated by the Enteric Nervous System ($\text{ENS}$), often referred to as the "second brain," though it is responsive to modulation from t…
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Peristalsis
Linked via "esophagus"
| Type | Description | Primary Location | Velocity Profile |
| :--- | :--- | :--- | :--- |
| Primary Peristalsis | A direct response to the physical act of swallowing; clears the bolus from the esophagus. | Esophagus | Highly regular, rapid transit phase. |
| Secondary Peristalsis | Waves generated independently of swallowing, triggered by residual distension. | Esophagus, Stomach | Variable amplitude; frequency modulated by $\text{ENS}$ excitability. |
| M…