Biology: The Dynamics of Life, California Edition

Section 2: The Circulatory System

The Circulatory System

1.
Which veins bring blood from the head and body back to the heart?
A)venae cavae
B)ventricles
C)antibodies
D)aortic arches
2.
What are the two upper chambers of the heart called?
A)the valves
B)the antigens
C)the atria
D)the plasma
3.
Which blood component is a liquid?
A)platelets
B)plasma
C)white blood cells
D)red blood cells
4.
__________ carry blood to the heart.
A)Veins
B)Lungs
C)Antigens
D)Alveoli
5.
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This chart shows blood pressure in different parts of the human body. In which of these locations is the systemic blood pressure between 20 and 40 mmHg?
A)vena cava
B)capillaries
C)large veins
D)aorta
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