100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
NURS 1220 Ch 21 Pt 1 Test With Complete Solution $9.99   Add to cart

Exam (elaborations)

NURS 1220 Ch 21 Pt 1 Test With Complete Solution

 4 views  0 purchase
  • Course
  • NURS 1220
  • Institution
  • NURS 1220

NURS 1220 Ch 21 Pt 1 Test With Complete Solution...

Preview 3 out of 24  pages

  • August 2, 2024
  • 24
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • nurs 1220 ch 21 pt 1 test
  • NURS 1220
  • NURS 1220
avatar-seller
Newsolution
NURS 1220 Ch 21 Pt 1 Test With
Complete Solution

Hemodynamics - ANSWER is the means by which blood flow is altered and
distributed and by which blood pressure is regulated.

In general, a blood vessel has 3 layers... - ANSWER -tunica intima (tunica
interna)

-tunica media

-tunica externa (tunica adventitia)

tunica intima (tunica interna) - ANSWER -innermost layer, adjacent to lumen

-inner endothelium, basement membrane

Tunica media - ANSWER -middle layer, smooth muscle and elastic fibers

-vasocontraction and vasodilation

tunica externa (tunica adventitia) - ANSWER -outmost layer, adjacent to
surrounding tissue

-elastic and collagen fibers

angiogenesis - ANSWER -formation of new blood vessels e.g. fetal
development, wound healing

-stimulated by some cancers

-inhibiting angiogenesis is a potential form of treatment.

,is angiogenesis always a good thing? - ANSWER no, it can be caused by some
cancers

list the blood vessel types - ANSWER -arteries

-arterioles

-blood capillaries

-venules

-veins

arteries - ANSWER carry blood AWAY from the heart to other organs

the wall of an artery consists of a... - ANSWER tunica intima, media (which
maintains elasticity and contractility), and a tunica externa.

The walls of the artery are... - ANSWER elastic. which allows them to absorb
the pressure created by the ventricles of the heart as they pump blood into
the arteries.

what does the smooth muscle in the tunic media allow the arteries to do? -
ANSWER -arteries can regulate their diameter.

-allows arteries to increase or decrease lumen size and to limit bleeding from
wounds.

what are the types of arteries? - ANSWER -elastic (conducting) arteries

-muscular (distributing arteries)

examples of elastic arteries - ANSWER -aorta - largest artery in the body,
about the size of a garden hose

-pulmonary trunk

, high numbers of elastic fibers = - ANSWER high compliance - walls can
stretch easily and expand without tearing.

Muscular (distributing) arteries - ANSWER -medium diameter

-more smooth muscle, fewer elastic fibers

-distribute blood to various parts of the body

-can contract (vasoconstriction) and relax (vasodilation)

-finger sized

what type are most arteries? - ANSWER muscular arteries

elastic (conducting arteries) - ANSWER -large diameter

-more elastic fibers, less smooth muscle

-walls function as pressure reservoirs

arteries as pressure reservoirs - ANSWER -As blood is ejected from the heart
into elastic arteries, their walls stretch, easily accommodating the surge of
blood. As they stretch, the elastic fibers momentarily store mechanical
energy, functioning as a pressure reservoir

-Then, the elastic fibers recoil and convert stored (potential) energy in the
vessel into kinetic energy of the blood. Thus, blood continues to move
through the arteries even while the ventricles are relaxed

Which pairing is matched correctly regarding the structure of an artery?

a) tunica media - thinnest layer, consists of elastic and collagen fibers

b) tunica intima - consists of elastic fibers and smooth muscle fibers

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

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

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 Newsolution. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $9.99. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

77254 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$9.99
  • (0)
  Add to cart