Circulatory system

___ is a group of organs and tissues that act as transfer stations carrying needed materials to cells and removing their waste products.

• circulatory system

• respiratory system

• nervous system

The heart pumps blood around the body through a network of blood vessels that is over ___ miles

• 800

• 100,000

• 80,000

• 50,000

___ are tiny blood vessels that carry blood to an from almost all body cells and connect arteries and veins.

• arteries

• veins

• capillaries

___ takes place when blood travels from the heart, through the lungs, and back to the heart.

• pulmonary circulation

• systemic circulation

___ takes place when oxygen-rich blood travels to all body tissues except the lungs.

• pulmonary circulation

• systemic circulation

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

Tags

NGSS.MS-LS1-3

How many types of blood vessels are in our body?

• 1
• 2
• 3
• 4

Arteries carry oxygen rich blood away from the heart.

• True

• False

Veins carry oxygen poor blood back to the heart.

• False

• True

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