Circulatory system

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

Which blood cells carry oxygen throughout the body?

• Red

• White

• Plasma

• Platelets

Which blood cells that help you stop bleeding if you get a cut?

• Red

• White

• Plasma

• Platelets

Which blood vessels take blood TO the heart?

• Veins

• Arteries

• Capillaries

Which blood vessels take blood AWAY from the heart?

• Veins

• Arteries

• Capillaries

Which is the smallest of the 3 blood vessels?

• Veins

• Arteries

• Capillaries

Blood becomes bright red in color because of the

• amount of folic acid present
• amount of hemoglobin present
• amount of oxygen present
• amount of iron present

The liquid portion of the blood is

• leukocytes
• erthryocytes
• plasma
• thrombin

which blood type is the universal donor (all people can receive it)?

• O
• AB
• A
• B

Which of the following determines the blood type?

• Antigen

• Antibody