the heart-lqc 1a Flashcards
1
Q
the walls of the heart are made of
A
cardiac muscle
2
Q
why do many animals need a heart?
A
-allow mass transport/mass flow
-To overcome the limitations of diffusion and ensure fast enough delivery of oxygen gas to all body cells
3
Q
state the general function of valves in the heart
A
prevent back flow of blood
4
Q
what is the function of the coronary arteries
A
Carry blood containing oxygen from the heart to the heart muscle
