In the alveoli, oxygen in the air is exchanged for ________ __________ in the blood.
nitrogen
oxygen
carbon dioxide
nutrients
What does the circulatory system transport?
the arteries
the heart
the veins
oxygen and nutrients
Waste passes from the small intestine into the ________ _________. (digestive system)
anus
oesophagus
stomach
large Intestine
Where does gas exchange happen in the circulatory system?
In the veins
In the capillaries
In the arteries
In the heart
What takes blood from the heart to the body?
arteries
the lungs
capillaries
veins
Food goes from the stomach into the _______ __________. (digestive system)
oesophagus
small intestine
large intestine
anus
We breathe out ______ ________ from our nose and mouth.
water
nutrients
oxygen
carbon dioxide
Waste leaves our body through the _________. (digestive system)
stomach
anus
small intestine
mouth
We breathe in air through our _______ and _________.
lungs and alveoli
trachea and bronchi
nose and mouth
nose and trachea
The bronchi take the air into the lungs and then the air goes to the ___________.
alveoli
bronchi
mouth
trachea
In the alveoli, _________ in the air is exchanged for carbon dioxide in the blood.
oxygen
nutrients
nitrogen
carbon dioxide
In the _______, oxygen in the air is exchanged for carbon dioxide in the blood.
nose
alveoli
bronchi
trachea
What takes blood from the body to the heart?
arteries
veins
the lungs
capillaries
The air from our nose goes down the trachea and into the __________.
bronchi
mouth
lungs
alveoli
What does the small intestine do? (digestive system)
It is where oxygen is exchanged for carbon dioxide.
It is where waste leaves our body.
It separates the nutrients from the waste.
It is where digestion begins.
The heart ....
Is where gas exchange happens.
Is a big muscle that pumps blood around the body.
Is a small blood vessel that connects arteries and veins.
Is part of the digestive system.
Food goes from the oesophagus into the _________. (digestive system)
small intestine
large intestine
mouth
stomach
From the mouth, food travels down the ___________ into the stomach. (digestive system)
large intestine
small intestine
trachea
oesophagus
Where do we take in food? (digestive system)
through the anus
through the mouth
through the oesophagus
through the stomach