home *** CD-ROM | disk | FTP | other *** search
/ Anatomy & Physiology - Essential Study Partner / Anatomy & Physiology ESP 2.iso / pc / files / trm2.dxr / 00300_Field_TRM2S4A text.txt < prev    next >
Text File  |  1999-11-20  |  202b  |  1 lines
  1. The closing of valves in the heart produces sounds that are often described as "lub dup". The "lub" is produced by the closing of the AV valves. The "dup" is produced by the closing of semilunar valves.