Podcast
Questions and Answers
Which nervous system is intrinsic to the GI tract?
Which nervous system is intrinsic to the GI tract?
What do chemoceptors pick up on?
What do chemoceptors pick up on?
What do mechanoreceptors pick up on?
What do mechanoreceptors pick up on?
Where do endocrine cells secrete their products?
Where do endocrine cells secrete their products?
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Where do exocrine cells secrete their products?
Where do exocrine cells secrete their products?
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Which nervous system is considered intrinsic to the GI tract?
Which nervous system is considered intrinsic to the GI tract?
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What triggers the Vago-Vagal Reflex?
What triggers the Vago-Vagal Reflex?
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During which phase of digestion does the Vago-Vagal Reflex occur?
During which phase of digestion does the Vago-Vagal Reflex occur?
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What triggers the local reflexes during the gastric/intestinal phase of digestion?
What triggers the local reflexes during the gastric/intestinal phase of digestion?
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What are the two plexuses that make up the Enteric Nervous system?
What are the two plexuses that make up the Enteric Nervous system?
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Study Notes
Enteric Nervous System
- The Enteric Nervous System (ENS) is intrinsic to the Gastrointestinal (GI) tract.
Receptors
- Chemoceptors pick up on chemical changes in the GI tract.
- Mechanoreceptors respond to mechanical stimuli, such as stretching or distension, in the GI tract.
Cell Secretion
- Endocrine cells secrete their products into the bloodstream.
- Exocrine cells secrete their products into the lumen of the GI tract.
Vago-Vagal Reflex
- The Vago-Vagal Reflex is triggered by the presence of food in the stomach.
- The Vago-Vagal Reflex occurs during the gastric phase of digestion.
Local Reflexes
- Local reflexes during the gastric/intestinal phase of digestion are triggered by the release of hormones and peptides from endocrine cells in the GI tract.
Enteric Nervous System Structure
- The Enteric Nervous System consists of two plexuses: the Myenteric Plexus and the Submucosal Plexus.
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Description
Test your knowledge on the enteric nervous system and its role in gastrointestinal physiology. Explore the functions of the submucosal and myenteric plexuses, as well as the distinction between intrinsic and extrinsic components. Learn about the chemoceptors and mechanoceptors involved in detecting food and stretch, and understand the difference between endocrine and exocrine cell secretions. Challenge yourself with questions on the vagus nerve and its connection to the enteric nervous system.
