Circulatory and Respiratory System

The flap of skin that covers or closes in your throat to direct food into your stomach and not lungs is called

• valves

• epiglottis

• diaphragm

• trachea

Your rib cage protects what vital organ of the respiratory system?

• arteries

• valves

• lungs

• epiglotis

Your windpipe is also known as the

• trachea

• arteries

• diaphragm

• lungs

Blood inside of your heart relies on _____ to open and close to control blood flow.

• lungs

• trachea

• arteries

• valves

_______ rich with blood carry blood away from the heart to the rest of the body.

• arteries

• lungs

• diaphragm

• trachea

carry blood lacking oxygen back to the heart.

• arteries

• veins

• valves

• trachea

The ______ is the muscle below the lungs that expands and contracts when we breathe in and out.

• arteries

• lungs

• diaphragm

• veins

Label the chambers of the heart.

c

a

b

d

left atrium

right ventricle

left ventricle

right atrium

Name 2 other parts of the respiratory system.

• mouth & feet

• hands and feet

• nose & mouth

• ears and toes

About how long does it take your blood to go from your heart to the rest of your body and back to the heart?

• 1 day

• 1 hour

• 5 minutes

• 20 seconds