Exam (elaborations)
NU 503- CIRCULATION EXAM QUESTIONS AND ANSWERS
- Course
- Institution
NU 503- CIRCULATION EXAM QUESTIONS AND ANSWERS...
[Show more]
Content preview
NU 503- CIRCULATION EXAM QUESTIONSAND ANSWERS
Pulmonary Circulation - ANSWER oxygenated blood to left atrium via
pulmonary veins
oxygenate blood and remove carbon dioxide
pulmonary circulation origination - ANSWER right ventricle via
pulmonary artery
Systemic Circulation - ANSWER starts with aorta receiving output from
LV
Systemic circulation output with exercise - ANSWER varies greatly to
skin and skeletal muscles
Systemic vs pulmonary pressure - ANSWER systemic 5-10x higher than
pulmonary
Blood flow with heavy exercise - ANSWER Significantly increase blood
flow from 5 L/min to 25L/min
Decreases blood flow to all other organs but the heart (heart blood flow
increases with exercise)
Blood vessel structure layers - ANSWER 1. tunica intima
2. tunica media
3. tunica externa
Tunica intima - ANSWER vital to vascular health, single innermost layer
of vessel and creates vessel lining, basement membrane, and elastic
fibers
Tunica media - ANSWER middle vessel layer, concentric layers of
vascular smooth muscle cells. Surrounding smooth muscle is another
layer of elastic fibers
, Tunica externa - ANSWER outermost layer: strong connective tissue
that keeps vessels intact
Artery walls - ANSWER much thicker for higher pressures, highest in
aorta
Artery branching - ANSWER Branch into smaller vessels (arterioles 80%
SVR) extending from heart
Decrease in lumen diameter
Decrease in elastic fibers
Increase in relative amount of smooth muscle
Capillaries function - ANSWER Exchange between blood and tissues
capillaries vasculature - ANSWER thin walls of endothelial cells and
basement membrane
capillary blood flow - ANSWER collected into venules and larger veins
Law of LaPlace - ANSWER biophysics of vascular wall tension
hydrostatic pressure: aorta - ANSWER created by blood pumped into
aorta
wall tension created by - ANSWER hydrostatic pressure- push on vessel
wall
Wall tension - ANSWER contributor to rupturing of weakened vessel
what increases vascular wall tension? - ANSWER blood pressure
radius of vessel
What decreases vascular wall tension? - ANSWER increased wall
thickness
Vascular Aneurysm: Law of LaPlace - ANSWER weakened vessel is
dilates and radius increases and increased wall tension, creates vessel
enlargement over time, increasing risk of catastrophic rupture
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 or Stuvia-credit 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 luzlinkuz. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
72042 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now