Nervous to do This
smallest units of life
What are cells?
pumps 1,900 gallons of blood a day
What is the heart?
organs that helps you breathe
What are lungs?
first step in digestive system
What is the mouth?
number of bones in an adult human body
What is 206?
carry information to the brain
What are nerves?
cells carry me
What is oxygen?
molecule we breathe in
the tube that leads to the stomach
What is the esophagus?
known as the strongest bone in your body
What is the femur?
organ that you think with
What is the brain?
blood travels through these
What are blood vessels?
molecule we breathe out
What is carbon dioxide?
mixture produced by liver
What is bile?
What are tarsals?
communication highway that runs through your vertebrate
What is the spinal cord?
liquid pumped through the body
What is blood?
cell type that carries oxygen
What is a red blood cell?
about how long food stays in your stomach
What is four hours?
known as the weakest bone in your body
What is the clavicle, or collarbone?
name for a nerve cell
What is a neuron?
the two lower chambers of the heart
What are the ventricles?
air travel down this tube to your lungs
What is the trachea?
average length of the small intesine
What is about 23 feet long?
location of the smallest bone in the human body
What is the ear?