What question did this study set out to answer?

To determine whether the dorsal motor nucleus of the vagus is the primary anatomical origin of visceromotor fibers innervating visceral organs.

July 28, 1967Science

Function of the Dorsal Motor Nucleus of the Vagus

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Authors

FKFrederick W. L. KerrMayo Clinic

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Implication

Experimental study shows preserved organ responses following dorsal motor nucleus lesioning in cats, indicating this region is not a primary source of visceromotor fibers.

Key Points

To determine whether the dorsal motor nucleus of the vagus is the primary anatomical origin of visceromotor fibers innervating visceral organs.
Destroyed the dorsal motor nucleus of the vagus in feline subjects.
Maintained post-lesion survival periods ranging from 9 to 44 days.
Delivered electrical stimulation to the distal end of the severed cervical vagus to monitor functional responses in the heart, bronchi, esophagus, and duodenum.
Peripheral stimulation of the severed cervical vagus elicited organ responses in the heart, bronchi, esophagus, and duodenum that were within normal limits or only mildly depressed.
The preservation of visceral motor responses indicates that the dorsal motor nucleus is not a major source of visceromotor efferent fibers.

Cite This Study

Frederick W. L. Kerr (1967) studied this question.

synapsesocial.com/papers/6a7f1bf173b39cefb3f0082f https://doi.org/10.1126/science.157.3787.451

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Implication

Experimental study shows preserved organ responses following dorsal motor nucleus lesioning in cats, indicating this region is not a primary source of visceromotor fibers.

Function of the Dorsal Motor Nucleus of the Vagus

Discussion

Member takes

Implication

Key Points

Cite This Study

Function of the Dorsal Motor Nucleus of the Vagus

Discussion

Member takes

Implication

Key Points

Cite This Study

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