Which system allows blood to circulate throughout the body to transport oxygen and nutrients to all the cells and tissues?

• Nervous

• Respiratory

• Circulatory

These cells, in the blood, carry oxygen and give the blood its color.

• white blood cells

• plasma

• platelets

• red blood cells

The cells in the blood that help fight germs like bacteria and viruses

• red blood cells

• platelets

• white blood cells

Tags

NGSS.MS-LS1-3

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

Tags

NGSS.MS-LS1-3

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.MS-LS1-3

The circulatory system works with the ___________ system to provide our body with oxygen.

• respiratory

• digestive

• muscular

What is the circulatory system made up of?

• Lungs, blood, blood vessels

• Liver, kidneys, and stomach

• Heart, Blood Vessels, and Blood

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

Arteries always carry oxygen rich blood away from the heart.

• True

• False

Veins always carry blood back to the heart.

• False

• True