the heart and blood vessels Flashcards
1
Q
open circulatory system
A
means blood leaves blood vessels and flows around the cells of the animals body before re-entering blood vessels again
2
Q
closed circulatory system
A
means blood remains in a continuous system of blood vessels
3
Q
portal system
A
is a blood pathway that begins in capillaries
4
Q
diastole
A
is when the heart chambers relax
5
Q
systole
A
when the heart chambers contract
6
Q
pulse
A
the alternate expansion and contraction of arteries
7
Q
blood pressure
A
the force exerted by the blood against the walls of the blood vessels (mainly arteries)
