Free online searchable
2009 ICD-9-CM
Diseases and Injuries
>> Tabular
Index
>> Alphabetic
Index
Procedures
>> Tabular
Index
>>
Alphabetic Index
Appendices
>> Drugs
/ Chemicals
>> External Causes
Other Resources
>> HCPCS Alpha
>> Medical
Dictionary
>> Drug Directory
Tips
Contribute
| Sinoatrial Node Sinuatrial Node | Sino-Atrial Node | Sinu-Atrial Node | Node, Sino-Atrial | Node, Sinoatrial | Node, Sinu-Atrial | Node, Sinuatrial | Nodes, Sino-Atrial | Nodes, Sinoatrial | Nodes, Sinu-Atrial | Nodes, Sinuatrial | Sino Atrial Node | Sino-Atrial Nodes 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). | |
| The National Library of Medicine (terms and conditions) | |