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Questions and Answers
What is the function of the VAGO-VAGAL (long) REFLEX in the gastrointestinal tract?
What is the function of the VAGO-VAGAL (long) REFLEX in the gastrointestinal tract?
- Sensory: transmits pain signals to the CNS
- Inhibitory: decreases motility, inhibits secretion, vasoconstrictive
- Regulatory: modulates enzyme production and absorption
- Stimulatory: increases motility, secretomotor, vasodilatory (correct)
Where are the MYENTERIC PLEXUS and SUBMUCOSAL PLEXUS located in the gastrointestinal tract?
Where are the MYENTERIC PLEXUS and SUBMUCOSAL PLEXUS located in the gastrointestinal tract?
- Embedded within the Muscularis Mucosae
- Within the lumen of the GI tract
- Adjacent to the serosa layer
- Between the two layers of musculature and in the submucosa, just outside the Muscularis Mucosae (correct)
How do sympathetics primarily inhibit the GI-Tract?
How do sympathetics primarily inhibit the GI-Tract?
- By directly stimulating smooth muscle contraction
- By modulating the activity of the enteric nervous system
- By presynaptic inhibition, inhibiting release of ACh (correct)
- By enhancing the release of ACh
What is the role of Intestino-Intestinal (short) REFLEX in the gastrointestinal tract?
What is the role of Intestino-Intestinal (short) REFLEX in the gastrointestinal tract?
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What effect does Norepinephrine have on GI-Motility when it acts on smooth muscle?
What effect does Norepinephrine have on GI-Motility when it acts on smooth muscle?
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