Circulatory System

What is the main organ of the circulatory system?

• Small intestine

• Bone

• Blood vessels

• Heart

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.

The heart is about the size and shape of your . . .

• head

• fist

• hand

• foot

How does the heart work?

• It pumps blood first to the lungs, back to the heart and then around the rest of the body.

• It pumps blood first to the rest of the body, back to the lungs and then to the heart.

• It pumps blood around the rest of the body, back to the heart and then to the lungs,

• It pumps blood first to the rest of the body, back to the heart and then around the rest of he body.

What part is pointed with arrow?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What part is pointed with arrow?

• Pulmonary veins

• Pulmonary artery

• Aorta

• Vena cava

What part is pointed with arrow?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What part is pointed with arrow?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

What part is pointed with arrow?

• Left atrium

• Right atrium

• Left ventricle

• Right ventricle

Which is the correct definition of the Circulatory system?

• The system fights disease so the body stays healthy.
• The system that circulates blood and oxygen through the body, consisting of the heart,blood vessels,and blood.
• Breaks down food into smaller pieces and absorbs those nutrients into the body.
• Provides shape and structure for the body.