___________________ gas is found in the air that we breath in.
Oxygen
__________________ system ensures that oxygen and nutrition are received by all parts of the body.
Circulatory
______________ is the best to describe the sudden inhalation caused by the contraction of diaphragm.
Hiccup
The __________ system includes our heart and blood vessels.
Circulatory
The _________ system moves blood around our body.
circulatory
Oxygen from the air goes into our _________ when we breathe.
Lungs
The _________ is like the body's engine, pumping blood non-stop.
Heart
Our nose, mouth, and lungs are part of the _________ system.
Respiratory
The __________ is a big muscle that helps us breathe.
Diaphragm
___________ carries the air that we breath in from the nostrils to the lungs.
Trachea
_______________ connects the arteries to the veins.
Capillaries
Blood carries oxygen to our _________.
Cells
The heart has _________ chambers that pump blood.
Four
_____________ is removed from our lungs when we exhale.
Carbon dioxide