Your brain weighs about this amount when you are full grown.
What is 3 pounds?
This is the strongest muscle of the bidy.
What is the heart?
You have two of these organs which inflate and deflate with every breath.
What are the lungs?
There are how many bones in the body?
What is 206?
Muscles that function automatically, without our control, are called this.
What is involuntary?
The vertebrae are bony protection for this vital pathway
What is the spinal cord?
A doctor or nurse listens to your heartbeat using this equipment.
What is a stethoscope?
The name of the important gas that your body cells need in order to stay alive.
What is oxygen?
These 12 pairs of chest bones protect the lungs and heart, both in front and in back of the chest.
What are the ribs?
The heart of an example of this kind of muscle.
What is cardiac muscle?
This part pf your body is like a main control center, giving orders to all areas of your body?
What is the brain?
Your heart rate can be measured by feeling this on your wrist.
What is your pulse?
The name of the waste gas that you exhale, or breathe out, and is not needed by the body.
What is carbon dioxide?
This is the helmet shaped bone that protects the brain.
What is the skull?
These kinds of muscles are attached to bones and allow us to move, bend, and twist.
What is skeletal muscle?
your brain cells are very sensitive to this gas and without it, they can begin to die.
What is oxygen?
The number of chambers in your heart.
What is four?
The name of this tissue flap that covers the trachea when you swallow so that food does not go down the trachea.
What is the epiglottis?
This is the strongest bone in the body.
What is the femur?
These kinds of muscles are found in body organs and control the movement of organs and vessels.
What is smooth muscle?
This is the largest part of your brain, and it id responsible for your intelligence.
What is the cerebrum?
These are very thin blood vessels in which the exchange of oxygen and food take place in the body cells.
What are capillaries?
The name of the millions of tiny air sacs which are located inside the lungs.
What are alveoli?
This jelly-like substance is found in the center of long bones and helps make new red blood cells.
What is bone marrow?
Muscles are able to do work when they are sent messages through these.
What are nerve impulses.