7.12B

Fights disease and infection. Made by the lymphatic system.

• white blood cells

• red blood cells

• circulatory system

• blood

These blood vessels take oxygenated blood to the body cells.

• heart

• artery

• vein

• capillary

The system that sends electrical signals to the heart that tell it to beat.

• respiratory

• lymphatic

• nervous

• digestive

The 3 main functions of the Circulatory System

• break down food, remove waste, make blood cells

• react to stimuli, grow, adapt

• deliver materials, remove waste, and fight infection

connects arteries to veins, site of exchange for nutrients, waste and oxygen.

• Capillaries

• Veins

• Arteries

• Valves

liquid portion of blood, typically yellow, where nutrients are dissolved.

• Blood

• Plasma

• Lymph

• Mucus

What is the main organ of the circulatory system?

• small intestine

• bone

• lungs

• heart

Veins carry oxygen poor blood back to the heart.

• False

• True

Arteries carry oxygen rich blood away from the heart.

• True

• False

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.