About this document
Grade 9 Biology: Circulation and Digestion by Manar Kanawaty is a document available to read on EtoBox.
1) An atheroma plaque containing cholesterol blocks and obstructs arteries, preventing blood circulation and oxygen/nutrient delivery to organs/tissues downstream. 2) Blood vessel A is a vein with a thinner wall and slower blood flow compared to blood vessel B, which is an artery with a thicker wall and faster blood flow. 3) In muscles, oxygen diffuses from blood into muscles while carbon dioxide diffuses from muscles into blood during gas exchange.
- Author
- Manar Kanawaty
- Language
- EN