Lecture notes
Control of peripheral resistance
- Module
- Medicine
- Institution
- Queens University Belfast (QUB)
Lecture notes of 5 pages for the course Medicine at QUB (Cardiac Physiology)
[Show more]
Seller
Follow
Content preview
PERIPHERALRESISTANCEThe CV system lacks the capacity to perfuse all vascular
beds so we must direct flow where its needed when its
needed
It must reach's
Brain
spmacnic in
Kidneys Mainly flows
to muscle
Liver in
exercise
Muscles
Laminar vs turbulent flow
A Laminar Smooth flow in
layers with quickest at centre of
L lumen
T I n most blood vessels until a
critical velocity
B Turbulent Disordered with extensive mixing
Beyond critical flow past an obstruction
velocity or
clotting more
likely
, Audible bruits murmurs and Korat Koff sounds
Vascular resistance
A In series Different
categories of vessels Arteries
arterioles capillaries venules
veins
More resistance in series the
greater total resistance
B In parallel Within a vascular bed similar categories
of vessels are arranged in parallel
More resistance in parallel LESS TOTAL resistance
Blood flow meast
Doppler flow me try using the doppler shift of Sound
pulses bounced off blood cells to estimate their speed
Fick principle to estimate flow
Venous occlusion piethysmography
Extremity sealed in a watertight
container and its venous drainage
occluded Rate of flow into the
extre ity
is then proportional to the volume
change observed
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller caustin2536. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £2.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
64438 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy revision notes and other study material for 14 years now