Dictionary

sinus node

noun

Definition of SINUS NODE

:  a small mass of tissue that is embedded in the musculature of the right atrium of higher vertebrates and that originates the impulses stimulating the heartbeat
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First Known Use of SINUS NODE

1937
Medical Dictionary

sinus node

noun

Medical Definition of SINUS NODE

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Next Word in the Dictionary: sinusoidPrevious Word in the Dictionary: sinusitisAll Words Near: sinus node
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