Chapter 6 - Transport systems in mammals and plants Flashcards
1
Q
Advantages of a double circulatory system
A
- BP can be maintained
- oxygenated blood and deoxygenated blood is not mixed
- increased efficiency in delivering oxygen
- BP in both circuits can be maintained at different levels
2
Q
Advantages of a closed circulatory system
A
- BP can be maintained all through body
- BP in different circuits can be different
- blood supply can be varied between organs
- lower volumes of blood required
3
Q
What are the different tissue types in artery walls
A
Smooth muscle
Endothelium / tunica intima
Collagen
Elastic fibers
4
Q
What is the symplast pathway?
A
- travels through the protoplasm
- travels through the plasmodesmata.
- all the way through the center of all of the cells (vacuole etc.)
5
Q
What is the apoplast pathway?
A
- goes through the cell walls
- diffuse along the cellulose fibers
