the heart+blood vessels Flashcards
1
Q
diffusion
A
sufficient for transport of materials in small animals-large animals need circulatory system
2
Q
open circulatory system means
A
that blood leaves blood vessels
3
Q
closed circulatory system
A
means that blood is always in blood vessels
moves blood farther
allows alterations in blood flow to body organs
4
Q
arteries
A
carry blood away from heart
thick wall
small lumen
5
Q
veins
A
carry blood to heart
thin wall
large lumen
