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Unformatted text preview: B 1o o d Pre s sure #"$ff..S$p" g$E*ftTgt t' Lab 2 I i s rt ie rO '"lt il ! 1. ,olub,,,the first in a series and the loudest soundo is caused by the closure of the AV valves as ventricular pressure rises above atrial pressure' 2. ('D,b"rtfr. ,..onA in u se'ies ""i tttt audible than the lub' is caused by the closure of the aortic nnJp"i-onary semilunar valves as ventricular pressure falls below atrial pressure' use your stethoscope to listen to.your heart or your lab partner's heart sounds' If you don't hear anything, check that the t"gglt ;; th: *d oi,tht stethoscope is flipped up (towards you) and tiifi;;;using trti-nut to""d part of the device' If the lab is noisy' do this in the hall. B. Blood and Pulse Pressure The rhythmic expulsion of blood from the left ventricre into the arterial system produces a blood pressureifil. aorlaunO futg. utt.ries'. Blood pressure rises to a maximum (systotic pr.rror.f during the contrirti* or the left ventricle and then falls to a minimum (diastolic...
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This note was uploaded on 02/09/2012 for the course BIO 102 taught by Professor William during the Spring '11 term at Harvard.
- Spring '11