1. What is the first line of defense against diesease?
	White Blood Cells	
	Spleen
	The Skin

2. What is Blood Pressure?
	Blood pressure is the pressure exerted by the blood against the inner walls of the blood vessels.
	It is the amount of blood that can fit into your heart.
	It is the density of your blood


3. What type of cell helps to clot blood? 
	Red Blood Cells
	Platelets 
	White blood cells


4. What does excretion mean?
	Is the act of cleaning the human body
	Excretion is the removal of waste products from fluids circulating inside the body. 
	Is the act of fighting disease


5. What is the major export of the excretory system? 
   
	blood cells
	energy
	Urine and feces


6. What is the smallest bone in the human body? 

	Phalanges
	Stapes
	Coccyx

7. How many muscles are in the heart?
	1
	4
	12

8. Where is the temporalis located?

	In the side of the head
	In the back of the neck
	In the feet


9. What two parts of the body does the diaphragm seperate?
	stomach and lungs
	head and body
	chest cavity and abdominal cavity


10. What is the colon sometimes called?

	rectum
	large intestine
	little intestine