IGCSE 0610 Biology Transport in Human Revision Note
8 views 0 purchase
Course
Biology 0610
Institution
GCSE
Book
Cambridge IGCSE Biology Coursebook with CD-ROM
This revision notes provide detailed explanations, clear and concise pictures and concepts to help users understand the topic of IGCSE GCSE 0610 Biology transport in humans, blood and coronary heart disease.
IGCSE Biology Topic 1 (Characteristics & Classification of Living Organisms)
Class notes biology: Characteristics of living organisms
Class and mark scheme notes Biology Cambridge IGCSE with Biology Coursebook with CD-ROM
All for this textbook (50)
Written for
GCSE
GCSE
Biology 0610
1
All documents for this subject (17)
Seller
Follow
MC28
Content preview
A. BLOOD VESSELS
Muscle and
elastic tissue
Connective tissue
(outer layer)
Endothelium
(inner lining)
Lumen
(hole)
(hole)
ARTERY VEIN CAPILLARY
ARTERY VEIN CAPILLARY
Function Carries blood away from the Carries blood Connects arteries and
heart back to the heart veins for exchange
Thick layer of muscle and Thin layer of Very thin.
Wall thickness elastic tissue muscle and One cell thick for fast
elastic tissue diffusion across it.
Lumen size Small Large Very small
Blood flow High pressure Low pressure Very low pressure
Contains valves No Yes No
• Thick collagen outer wall • Pocket valves • Thin walls for a
withstands high blood prevent blood shorter diffusion
How structure is pressure falling distance
related to backwards
function • Thick layer of muscle due to the low • Permeable walls for
tissue constricts or dilates pressure and faster diffusion
to withstand the high gravity
blood pressure •. Close to cells for a
• Wide lumen shorter diffusion
• Thick layer of elastic tissue offers less distance
stretches to accommodate resistance to
surge in blood flow and blood flow • Small diameter so
recoils to smooth out the can fit in small
blood flow spaces for faster
diffusion
• Small lumen maintains
high blood pressure • Many tiny
capillaries create a
• Smooth lumen to reduce large surface area
friction so blood flow has for faster diffusion
less resistance
, B. ARTERIOLES AND VENULES
Vein Artery
Venule Arteriole
(Small vein) (small artery)
Capillary
ARTERIOLES VENULES
(Small arteries) (Small veins)
Connect arteries to capillaries Connect capillaries to veins
Contain smooth muscle than can
contract and relax Ensures that blood containing waste is taken
This changes the diameter of the arteriole away from organs by veins
This allows it to control the blood flow to
different organs
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 MC28. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $5.49. You're not tied to anything after your purchase.
