Circulatory System

What kind of circulation is the flow of blood from the heart and back to the lungs through the arteries and veins?

(a)  

What are the two lower chambers of the heart that receive blood from the atria called?

• Atria

• Aortas

• Muscles

• Ventricles

What do the muscular walls of the ventricles do as they fill up?

(a)  

These kind of blood vessels take blood away from the heart.

• Blood vessels

• Heart

• Arteries

• Muscles

Arteries stretch and shrink as blood moves through them. This movement on the artery walls will cause a....................?

• Beat

• Blood Clot

• Pressure

• Pulse

What should your average beats per minute (BPM) be?

• 55-85

• 79-100

• 25-30

• 110-125

These are blood vessels that bring blood towards the heart.

• Veins

• Capillaries

• Lungs

• Chicken nuggets

These blood vessels are the smallest in the circulatory system.

• Arteries

• Veins

• Capillaries

• Cells

How thick are the walls of a capillary?

(a)  

What do red blood cells return from the tissues back to the lungs?

• Oxygen

• Carbon dioxide

• Hydrogen

• Methane