Loading presentation...

Present Remotely

Send the link below via email or IM

Copy

Present to your audience

Start remote presentation

  • Invited audience members will follow you as you navigate and present
  • People invited to a presentation do not need a Prezi account
  • This link expires 10 minutes after you close the presentation
  • A maximum of 30 users can follow your presentation
  • Learn more about this feature in our knowledge base article

Do you really want to delete this prezi?

Neither you, nor the coeditors you shared it with will be able to recover it again.

DeleteCancel

Make your likes visible on Facebook?

Connect your Facebook account to Prezi and let your likes appear on your timeline.
You can change this under Settings & Account at any time.

No, thanks

Circulatory System

No description
by

Bradley Vink

on 28 May 2010

Comments (0)

Please log in to add your comment.

Report abuse

Transcript of Circulatory System

Intro to the Circulatory System Why Have a Circulatory System? For single celled organisms, and simple animals, all cells are in contact with the external environment
Diffusion of CO2, O2, H2O, nutrients and wastes can be done directly with the external environment For more complex organisms, a circulatory system is necessary because not all cells are in contact with the environment
Functions of the Circulatory System Brings O2 to cells



Takes wastes away from cells
Relays chemical messages (hormones)
Types of Systems Open System Closed System Blood bathes cells directly
No distinction between blood and interstitial fluid
Snails, Insects, Crustaceans
Blood is contained within blood vessels
Blood and interstitial fluid are separate
Earthworms, squids, octopi, and vertebrates
a fluid, e.g., blood to carry the materials to be transported
a system of vessels to distribute the blood (closed systems)
a pump to push the blood through the system exchange organs to carry out exchanges between the blood and external environment, e.g.,
lungs and intestine to add materials to the blood;
lungs and kidneys to remove materials from the blood.
Helps maintain fluid levels
Important in immunity Brings nutrients to cells Takes CO2 away from cells An Efficient Circulatory System has: Circulatory


System
Full transcript