SINO ATRIAL NODE
\sˈiːnə͡ʊ ˈatɹɪəl nˈə͡ʊd], \sˈiːnəʊ ˈatɹɪəl nˈəʊd], \s_ˈiː_n_əʊ ˈa_t_ɹ_ɪ__ə_l n_ˈəʊ_d]\
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The small mass of modified cardiac muscle fibers located at the junction of the superior vena cava and right atrium. Contraction impulses probably start in this node, spread over the atrium and are then transmitted by the atrioventricular bundle to the ventricle.
By DataStellar Co., Ltd
Word of the day
Platidiam
- An inorganic water-soluble platinum complex. After undergoing hydrolysis, it reacts DNA produce both intra interstrand crosslinks. These crosslinks appear to impair replication and transcription of DNA. The cytotoxicity cisplatin correlates with cellular arrest in G2 phase cell cycle.