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.
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
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 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.