"
How much blood is sent from the heart at each beat?--"About two ounces."
What is the blood?--"A liquid made from food and drink."
Of what color is the blood?--"Bright red, when pure; dark red, when
impure."
How does the heart send the blood through the body?--"Through pipes called
arteries."
What do the arteries resemble in the way they are arranged?--"The branches
of a tree."
What makes the blood impure?--"As the blood flows, it gives nourishment to
every part of the body; this makes it poor. It also takes up the old
worn-out particles; this makes it impure."
Where do the arteries carry the impure blood?--"To the veins."
Where do the veins carry the impure blood?--"To the heart."
Where does the heart carry the impure blood?--"To the lungs."
What happens to the impure blood in the lungs?--"It is made pure."
What makes it pure?--"Pure air."
Where do the lungs send the blood after it is made pure?--"Back to the
heart."
Where does the heart send the pure blood?--"Throughout the body."
What is the journey of the blood to and from the heart to the different
parts of the body called?--"The circulation of the blood."
What is the circulation of the blood?--"The circulation of the blood is its
journey from the heart to the different parts of the body, and from the
different parts of the body back to the heart.
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