Works Cited

http://8fb80e.medialib.glogster.com/media/4fd198205eda53945f10bb44533d37804812052d4e3a258f43c42d670cdc1a24/red-blood-cells-flying-down-the-blood-stream-1920x1080-27592950.jpg

http://classes.midlandstech.edu/carterp/Courses/bio211/chap17/Slide3.JPG

http://upload.wikimedia.org/wikipedia/commons/1/1d/Vein_art_near.png

http://www.healtone.com/product_images/uploaded_images/Blood-.jpg

http://pathy.med.nagoya-u.ac.jp/atlas/img/t7/img02.jpg

http://scahillsborough.org/wp-content/uploads/2012/05/NormalSickledBloodCells.jpg
https://fmss12ucheme.files.wordpress.com/2013/05/hemoglobinmolecule.gif
http://www.pearsonhighered.com/educator/course/Human-Anatomy/91028651.page?paramValue=allEdition