 |
| Previous Image | Next Image |
| Description: As shown in this house fly, air enters holes called spiracles. Oxygen diffuses directly from the fluid-filled tracheole tips to cells that come into contact with the tips. The circulatory system plays no role in gas exchange. The micrograph illustrates a few branching tracheoles.
Picture Stats: Views: 5737 Filesize: 71.32kB Height: 628 Width: 850 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=1227 |