Heart
What is the about size of the human heart?
A fist.
What do red blood cells carry from the lungs?
Oxygen.
What do white blood cells do?
They fight disease.
What do veins do?
They carry blood toward the heart.
What do arteries do?
They carry blood from the heart.
Fill in the blank.
The human heart pumps _____ into the body.
Blood.
How many red blood cells may be in a drop of blood?
A million.
Who do white blood cells float with?
Red blood cells.
What color are veins?
Blue.
What color are arteries?
Dark red.
Which is NOT a fact.
A:Your heart is the size of a fist.
B:Your heart is a muscle.
C:Arteries are blue.
C: Arteries are blue.
Who is a red blood cells' best friend?
The heart.
True or False
White blood cells are larger than red blood cells.
True
Do veins go to your entire body?
Yes.
Do arteries go to your entire body?
Yes.
Where does the red blood cell go to after his delivery?
The left atrium.
Which is faster?
A red blood cell delivering oxygen or a blink of an eye?
A red blood cell.
Do white blood cells have a long life?
No.
Fill in the blanks:
Veins are _____ vessels that carry _____.
Blood.
Where do arteries drop off blood?
The rest of the body.
What makes a heartbeat?
The opening and closing of heart valves.
What does the oxygen from the lungs do when a red blood cell reaches it?
They jump on the red blood cell.
True or False:
Do white blood cells decrease when a person is healthy?
True.
What things stop the red blood cell from falling down?
One-way vein valves.
True or False:
Arteries are weaker than veins?
False.