Heart
How big is a child's heart?
About the size of their fist.
What does the blood vessels include of?
Arteries, veins and capillaries.
What is your blood made up of?
Red and white blood cells, plasma and platelets.
Why do the veins appear blue?
It is the blood in the veins that gives them color.
Where are arteries located?
Deep in the muscle.
Close to the center of the chest.
What is the veins' job?
To pump blood throughout your body and carry it back to your heart.
To help the body fight infection and other diseases.
Which could be considered to be the most important vein?
The vena cava.
How many layers does an artery have?
Three
How many times does the heart beats in one minute?
60 to 100 beats per minute.
What is the arteries' job?
To distribute oxygen-rich blood to your body.
How big is a red blood cell?
Around 7 microns in size.
Why do veins pop out?
By blood pooling in the veins.
About how many arteries are there in the body?
About 20.
How many beats does the heart typically have a day?
About 100,000.
What is the capillaries' job?
Delicate blood vessels that transport blood, nutrients and oxygen to cells in your organs and body systems.
How much blood is made in one second?
Manufactures 17 million red blood cells per second.
What are the 3 types of veins?
Deep veins, Superficial, and Pulmonary veins.
Which is the only artery without valves?
The pulmonary artery.
How many gallons of blood does your heart pump each minute?
Your heart pumps about 1.5 gallons of blood every minute.
What are the 4 major arteries?
Celiac, mesenteric, renal, and iliac arteries.
How many blood cells are in a pint of blood?
2.4 Trillion red blood cells in one pint of blood.
What is a tiny vein called?
Spider veins.
How many arteries are in the tongue?
Four.