class 7 CIRCULATORY SYSTEM

Arteries carry blood under -------

• low pressure

• high pressure

• capillaries

• flow backward

------ carry blood towards the heart

• arteries

• veins

• capillaries

• atrium

Which is responsible for providing oxygen to cells?

• respiratory system
• circulatory system
• muscular system
• nervous system

Your blood is made up of which of the following...

• plasma, red blood cells, blue blood cells
• white and red blood cells
• plasma and platelets
• plasma, red blood cells, white blood cells, and platelets

After the blood gets oxygen from the lungs, it goes through the pulmonary veins to the hearts....

• Right Atrium

• Left Ventricle

• Right Ventricle

• Left Atrium

What is the largest artery in the human body called?

• Superior Vena Cava
• Aorta
• Inferior Vena Cava
• Pulmonary Artery

The lower chambers of the heart are known as...

• valves
• ventricles
• atria
• septum

Blood high in carbon dioxide enters the heart through the superior vena cava into which atria?

• left
• right

The ___________ is the thick muscular wall that seperates the two sides of the heart.

• atria
• ventricles
• valve
• septum

White blood cells

• allow for gases to exchange
• give blood its color
• fight infection and disease
• help clot blood