nid: 58816
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Autonomic Connections to Heart and Blood Vessels. The nicotinic receptor is found on all autonomic ganglia, but the cardiovascular connections are particular, and do not conform to the usual competitive projections that would just cancel each other out when stimulated by nicotine. The opposing signals to the heart would both depolarize and hyperpolarize the heart cells that establish the rhythm of the heartbeat, likely causing arrhythmia. Only the sympathetic system governs systemic blood pressure so nicotine would cause an increase. English labels. From OpenStax book 'Anatomy and Physiology', fig. 15.13.
Anatomical structures in item:
Uploaded by: Jorn IJkhout
Netherlands, Leiden – Leiden University Medical Center, Leiden University
Medulla spinalis
Cor
Pons
Medulla oblongata
Truncus sympathicus
Nucleus ambiguus
Nucleus dorsalis nervi vagi
Nervus vagus
Ganglion cervicale superius
Creator(s)/credit: OpenStax
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"OpenStax AnatPhys fig.15.13 - Connections to Heart - English labels" at AnatomyTOOL.org by OpenStax, license: Creative Commons Attribution. Source: book 'Anatomy and Physiology', https://openstax.org/details/books/anatomy-and-physiology.
"OpenStax AnatPhys fig.15.13 - Connections to Heart - English labels" by OpenStax, license: CC BY. Source: book 'Anatomy and Physiology', https://openstax.org/details/books/anatomy-and-physiology.
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