1. which of the following is true about the structure of the kidneys?
a.heart-shape,1 to 2 inches long and 2 to 3 inches wide
b.oblong, 1 to 2 inches long and 2 to 3 inches wide
c.bean,4 to 5 inches long and 2 to 3 inches wide
d.round-shape, 4 to 5 inches long abd 2 to 3 inches wide

2. Which of the following is Not a function of the kidney?
a. they filter liquid wastes from the blood
b. they absorb nutrients from the food we eat
c. they maintain a stable balance of salt in the blood
d. all of the above

3. why is the right kidney is lower than the left?
a. the right kidney is bigger than the left
b. the
right kidney is heavier than the left
c. the stomach pushes the righ kidney doen
d. due to the presence of of liver on the right region of the body

4. kidneys remove urea from the blood.what do you call the filtering units that enable kidneys to do this function?
A. bladder B. nephrons C. ureter d. urethra

5. which of the following is not a proper way of taking care of kidneys?
A. exercising regularly
B. eating too much fatty food
C. Avoiding too much salty food
D. minimizing the taking of sweets

6. How can you take care of your kidneys to function properly?
a. eat junkfoods
b. drinking a lot of soft drinks
c. Drink 8-10 glassess of water a day
d. eat more sweets like candies and chocolates

7. how do the heart and lungs work together?
a. the lungs help the heart to pump blood
b. the heart provide nutrients to the lungs
c. the lungs help the heart provide nutrients to the body
d. the heart pumps the blood to the different body parts while the lungs filter the blood before going back to the heart

8. Stomach and brain are related to each other.In what way they are connected?
A. the stomach provides blood to the brain
b. the sromach provides oxygen to the brain
c. the brain remove the waste off the stomach
d. the brain controls the involuntary muscles of
the stomach


9.When you are in danger,your muscles move as fast as you can to protect yourself.how does this happened?
a.your lungs control your muscles to move fast
b. your stomach commands your muscles to work rapidly.
c. your brain react to the situation which results to rapid muscle movement
d. your heart tells you to react by controling the movement of your muscle

10. your friend had an accident.which damage his brain after dad accident,he cannot move both of his legs.Why did this happened?

a.your legs cannot anymore detect your brain.
b. the part of your legs connected to the brain was damaged.
c.the part of your brain commands your legs to stop moving.
d.the part of your brain that controls leg movement was affected


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