The Heart and Blood Vessels Flashcards
1
Q
Open Circulatory System
A
An open circulatory system means blood leaves blood vessels and flows around the cells of the animal’s body before re-entering blood vessels again
2
Q
Closed Circulatory System
A
A closed circulatory system means blood remains in a continous system of blood vessels
3
Q
Blood Pressure
A
Blood pressure is the force the blood exerts against the wall of a blood vessel
4
Q
Valves
A
Valves control the direction of blood flow
5
Q
Portal System
A
A portal system is a blood pathway that begins and ends in capillaries
6
Q
Diastole
A
Diastole is when the heart chambers relax
7
Q
Systole
A
Systole is when the heart chambers contract
8
Q
Pulse
A
A pulse is the alternate expansion and contraction of the arteries
