Pulmonary and systemic circulation

Pulmonary and systemic circulation

1. Mr.BinuBabu
MBA, M.Sc.(N)
Asst. Professor
Mrs. JincyEalias
M.Sc. (N)
Lecturer

2. Pulmonary and Systemic Circulations

3. Pulmonary circulation
•Pulmonarycirculationcarriesdeoxygenatedbloodaway
fromtheheart,tothelungs,andreturnsoxygenated
bloodbacktotheheart.

4. Pathway of Pulmonary Circulation
•Fromtherightatrium,theDeoxygenatedbloodis
pumpedthroughthetricuspidvalveintotheright
ventricle.
•Thenthisbloodpumpedfromtherightventricle
throughthepulmonaryvalveandintothe
pulmonarytrunkofthepulmonaryarteryand
travelsthroughthelungs.
•Wherecarbondioxideisreleasedandoxygenis
pickedupduringrespiration.Arteriesarefurther
dividedintoveryfinecapillarieswhichare
extremelythin-walled.
•Thenthepulmonaryveinreturnsoxygenatedblood
totheleftatriumoftheheart.

5. Systemic Circulation
•SystemicCirculationcarriesoxygenatedblood
awayfromthehearttothebody,and
returnsdeoxygenatedbloodbacktotheheart.

6. Pathway of Systemic Circulation
•Oxygen-richbloodfromthelungsleavesthepulmonary
circulationwhenitenterstheleftatriumthroughthe
pulmonaryveins.
•Thebloodisthenpumpedthroughthemitralvalveintothe
leftventricle.
•Fromtheleftventricle,bloodispumpedthroughtheaortic
valveandintotheaorta.
•Theaortaarchesandbranchesintomajorarteriestothe
upperbodybeforepassingthroughthediaphragm,where
itbranchesfurtherintoarterieswhichsupplythelower
partsofthebody.
•The arteries branch into smaller arteries, arterioles, and
finally capillaries

7. •Thedeoxygenatedbloodcontinuesthroughthe
capillarieswhichmergeintovenules,then
veins,andsuperiorandinferiorvenaecavae.
•Whichdrainintotherightatriumoftheheart.
•From the right atrium, the blood will travel
through the pulmonary circulation.