Respiratory and Circulatory System

What is the main organ in the respiratory system?

• lungs

• heart

• vein

• artery

You breathe in ___________ and breathe out ___________

• carbon dioxide, oxygen

• oxygen, carbon dioxide

Arteries carry blood ____________________, veins carry blood _________________

• back to the heart, away from the heart

• away from the heart, back to the heart

• to outer space, back to Earth

• to the front office, to Mrs. Ritter's room

What is the main function of the Respiratory System?

• blood transports nutrients and gases through the body

• exchanges gases between the body and the environment

• breaks down food to provide energy

• removes solid, liquid and gas waste from the body

The trachea is also known as

• the lungs

• the windpipe

• the esophagus

• the bronchi

As your physical activity ____________, your heart rate ___________ and your breathing rate _______________

• decreases, increases, stays the same

• increases, increases, increases

• increases, decreases, increases

• decreases, stays the same, increases

Tags

NGSS.MS-PS3-5

What is the main function of blood?

• supports and protects your body

• it removes liquid waste from the body

• it sends signals to your brain

• it carries oxygen to all your body cells and returns carbon dioxide to the lungs

Tags

NGSS.MS-LS1-7

When you breathe in, the lungs _________ in order to _________ air pressure, so that air will flow in.

• expand, decrease

• shrink, decrease

• expand,increase

• shrink, increase

Tags

NGSS.MS-PS2-5

The job of the red blood cell is to

• fight infection

• deliver oxygen and discard carbon dioxide

• form scabs

The heart has how many chambers (rooms)?

• four

• three

• two