Describe the structure of arteries, veins and capillaries and explain its relation to function

ArteriesArteries carry blood away from the heart. They have a thick muscular wall with a small lumen. The thick muscular walls withstands the high pressure of the blood flowing from the heart.
VeinsThe veins are responsible for returning the blood to the heart. They have a thinner wall compared to arteries, and have a large lumen. The veins contain valves preventing back flow.
Capillaries
The capillaries are the smallest, with a thin, semi-permeable wall and a very small lumen. This allows blood to pass through one cell at a time. Their semi-permeable wall allows for the transport of gases and nutrients into and out of the blood.

Answered by Lucy D. Biology tutor

3371 Views

See similar Biology GCSE tutors

Related Biology GCSE answers

All answers ▸

Explain the main thermoregulatory processes in humans.


How does cholinergis transmission occur at a neuromuscular junction?


What’s the difference between a eukaryote and a prokaryote?


How is DNA replicated?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2024

Terms & Conditions|Privacy Policy
Cookie Preferences