Login

Join for Free!
112070 members


Transport

For discussing the functions of different structures of all organisms.

Moderator: BioTeam

Transport

Postby MIA6 » Mon Jan 08, 2007 2:58 am

1. What's the colors of deoxygenated blood and oxygenated blood? My teacher always uses blue to represent deoxygenated blood and uses red to represent oxygenated blood. I don't know why?
2. The pulse is a wave of alternate stretchings and contracations of artery walls that proceeds from the aorta along all arteries and arterioles. The stretching does not represent the advancing front of a wall of blood. I don't understand what 'advancing front of a wall of blood' mean here?
3. Where do vena cavae from? I know they go to the right atrium, but i don't know their origin.

Thanks for help
MIA6
Garter
Garter
 
Posts: 43
Joined: Thu Sep 14, 2006 1:15 am

Postby MrMistery » Mon Jan 08, 2007 4:32 pm

both are red. the oxygenated blood is a little more intense, and the deoxygenated one is paler and darker. it is a convention to use red and blue to tell them apart, and because veins appear blue seen with the naked eye

2. in means that the pulse is just the shock wave, it moves much faster than the blood itself..

3. check a diagram. vena cavae come from the unification of smaller veins, which i am not going to waste time naming now..
"As a biologist, I firmly believe that when you're dead, you're dead. Except for what you live behind in history. That's the only afterlife" - J. Craig Venter
User avatar
MrMistery
Inland Taipan
Inland Taipan
 
Posts: 6832
Joined: Thu Mar 03, 2005 10:18 pm
Location: Romania(small and unimportant country)


Return to Physiology

Who is online

Users browsing this forum: No registered users and 1 guest

cron