1 / 13

laminar and turbulent flow

laminar and turbulent flow. Distribution of blood circulation. Total volume of blood in all vessels (intravascular volume): man : 5.4 l (77 ml / kg) woman : 4.5 l (65 ml / kg) Distribution: Heart 7% Pulmonary circulation 9% Systemic circulation 84% from that veins 75%

ezra-pace
Download Presentation

laminar and turbulent flow

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. laminar and turbulent flow

  2. Distribution of blood circulation • Total volume of blood in all vessels (intravascular volume): • man: 5.4 l (77 ml / kg) • woman: 4.5 l (65 ml / kg) • Distribution: • Heart 7% • Pulmonary circulation 9% • Systemic circulation 84% • from that veins 75% • large arteries 15% • small arteries 3% • capilaries: 7%

  3. Pressure – flow – velocity – diameter - resistance Vessels branching TPR = 8..l/r4. if vessel of diameter 2 mm branches into two vessels than not to increase periferal resistance the diameter of each has to equals 1.68 mm (NOT for arterioles = resistance) Blood flow – depends on diameter power to 4, ie increase in diameter of 19% increases blood flow two times

  4. cardiac cycleWiggers diagram • atrial contraction, complete ventricular fillling, fourth sound due to turbulence • ventr contraction, first sound due to valve closure, no ejection - isovolumetric • rapid ejection • depolarization – reduced ejection • second sound due to closure of aortic vlaves – isoV relaxation • rapid ventricular filling, third sound due to turbulence • reduced ventricular filling

  5. Venous system pressure -10 Sinus sagittalis 0 0 6 0 8 11 22 35 40 90

  6. Pressures and volumes • Pulse (systolic) volume(PV)= 70 ml • Final diastolic volume(FDV)= 120 ml • Final systolic volume = 50 ml = functional reserve of heart • Normal systole ejects around 60%of FDV = Ejection fraction = PV/FDV. • Heart distribution = PV x frequency

  7. Venous and arterial pulse • a: regurgitation from atria • c: bulge of tricuspidalis • v: pressure increase in atria before tricuspidal opening jugular venous pulse carotic pulse • dicrotic incision: vibration closing of mitral valve

More Related