How many teeth do humans have?
How many lungs does the human body have?
Which creature has eyes at the tips of its arms?
Which creature has 3 hearts?
What is the largest gland in the human body?
Which two parts of the body continue to grow for your entire life?
How many bones do sharks have in their body?
Where would you find a crab's teeth?
Which is the longest muscle in the human body?
What are the five human senses?