UMLS. CSP-HL7-ICD9CM-NCI-NDFRT-RXNORM
%
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
S S S- S0 S1 S2 S3 S4 S5 S6 S7 S8 S9 SA SB SC SD SE SF SG SH SI SJ SK SL SM SN SO SP SQ SR SS ST SU SV SW SY
SA SA2 SAA SAB SAC SAD SAE SAF SAG SAH SAI SAK SAL SAM SAN SAO SAP SAQ SAR SAS SAT SAU SAW SAX

S-A Node

[The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava (VENA CAVA, SUPERIOR) and right atrium. Contraction impulses probably start in this node, spread over the atrium (HEART ATRIUM) and are then transmitted by the atrioventricular bundle (BUNDLE OF HIS) to the ventricle (HEART VENTRICLE). ( MSH )]
UMLS (NCI) C0037189
 
Body Part, Organ, or Organ Component


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