Mia 6 Science: Circulatory System

The job of the heart is to . . .

• pump blood around the body.

• send food to the small intestines.

• break down food.

• give energy to the body.

Tags

NGSS.4-LS1-1

______________ are the smallest blood vessels.

• Arteries
• Veins
• Capillaries

Which one is not a main function of the circulatory system is

• maintaining fluid balance in the body

• protection (white blood cells destroy bacteria and viruses and antibodies fight specific diseases)

• transport blood, nutrients, and gases throughout the body

• to transport messages from the body to the brain

• regulates (controls) body temperature

White blood cells

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

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

Tags

NGSS.MS-LS1-3

Arteries carry oxygen rich blood away from the heart.

• True

• False

Veins carry oxygen poor blood back to the heart.

• False

• True

Which of the following is NOT part of the circulatory system?

• heart

• blood

• bones

• blood vessels

Why is blood that flows from the lungs to the heart bright red rather than dark red?

• Oxygen makes it red.
• Carbon dioxide makes it red.
• Gastric juices produce the red colour of the blood.
• The lungs add a pigment (dye) to blood as it flows
  through them.

Blood is carried back to your heart in little tubes called ____________.

• veins

• arteries

• hoses