1 / 8

Transport in the Earthworm

This study explores the transport systems in earthworms and grasshoppers, focusing on the differences between their circulatory systems. Earthworms possess a closed circulatory system where blood contained in vessels circulates throughout the body, transporting oxygen via hemoglobin and carrying dissolved nutrients. In contrast, grasshoppers have an open circulatory system, where blood bathes tissues directly in open spaces known as sinuses and primarily carries digestive products rather than oxygen. The mechanics of each system, including blood vessels and the heart, are analyzed for a comprehensive understanding of transport in these organisms.

kristy
Télécharger la présentation

Transport in the Earthworm

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Transport in the Earthworm and Grasshopper

  2. Aim: How does transport occur in the earthworm and the grasshopper? I. Transport in the Earthworm A. Closed Circulatory System – blood is contained in closed vessels. The blood does not leave these vessels. 1. Its blood contains hemoglobin, a red pigment which helps transport oxygen.

  3. 2. Its dissolved digestive end products are carried in blood. 3. Blood vessels a. Dorsal blood vessel – large blood vessel that runs along the top of the earthworm. Brings blood forward towards the aortic arches. b. Ventral blood vessel – large blood vessel that runs along the bottom of the earthworm. Brings blood from the aortic arches to the rest of the body.

  4. c. Capillaries – microscopic blood vessels that bring blood to and from the cells. d. Aortic arches – 5 pairs of muscular pumps that force the blood throughout the earthworm.

  5. II. Transport in the Grasshopper A. Open Circulatory System – the blood is not always enclosed in blood vessels. 1. Blood only carries digestive end products, NOT oxygen. 2. Tubular heart – a long, dorsal blood vessel that helps pump the blood forward. Grasshopper’s body movements also help move blood.

  6. 3. Sinuses – open spaces in which blood collects and soaks into tissues.

More Related