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EXCRETION

Total questions: 26

Worksheet time: 35mins

Name
Class
Date
1.
The lungs, kidney and skin are all part of the
a)
nervous system
b)
nephron
c)
kidney
d)
excretory system
2.
Which of the following mainly excretes CO2?
a)
skin
b)
kidney
c)
lungs
d)
urethra
3.
Which of the following mainly excretes nitrogenous waste, water and salts?
a)
skin
b)
kidney
c)
lungs
d)
gall bladder
4.
These organs are responsible for what?
a)
storing urine
b)
storing water
c)
filtering blood
d)
they don't have a particular job 
5.
What is #4?
a)
Kidney
b)
Ureter
c)
Bladder
d)
Urethra
6.
What is #2?
a)
Kidney
b)
Ureters
c)
Bladder
d)
Urethra
7.
How are the lungs associated with the excretory system?
a)
They help the flow of blood
b)
Help you urinate faster
c)
They take in oxygen.
d)
They produce the waste product, carbon dioxide (CO2)
8.
the removal of metabolic wastes such as carbon dioxide, water, salts, and urea
a)
digestion
b)
nutrition
c)
circulatory
d)
excretion
9.
where urine is stored temporarily
a)
urinary bladder
b)
ureter
c)
urethra
d)
bile
10.
What do kidneys filter?
a)
ammonia
b)
nitrogenous wastes
c)
urine
d)
blood
11.
Poisons can build up in the body if organs don't filter and get rid of them. This makes you sick and you could die. What is another name for poisons?
a)
toxins
b)
enzymes
12.
What is the main function of the excretory system?
a)
to collect and remove wastes from the body
b)
to strengthen skeletal muscles
c)
to protect the nervous system
d)
to bring oxygen to body cells
13.
A short tube where urine is released from the body is the _______.
a)
Ureter
b)
Kidney
c)
Bladder
d)
Urethra
14.
Place the following events in sequence:
A)  Urine passes through the ureters
B)  Urea enters the kidneys
C)  Urine enters the urethra
a)
B, A, C
b)
C, B, A
c)
B, C, A
d)
A, C, B
15.
what do the lungs do in the excretory system
a)
dispose of carbon dioxide through exhalation
b)
disposes of smog thru exhalation
c)
dispose of ultraviolet rays through exhalation
d)
dispose of rays through exhalation
16.

Which substance is NOT found in the liquid in the highlighted parts of a healthy person?

a)

Glucose

b)

Salt

c)

Water

d)

Urea

17.

Choose the substances (more than 1) that will be found in larger quantities the renal artery.

a)

glucose

b)

urea

c)

water

d)

oxygen

e)

carbon dioxide

18.

Choose the substances (more than 1) that will be found in larger quantities the renal vein.

a)

glucose

b)

urea

c)

water

d)

oxygen

e)

carbon dioxide

19.
Using the picture, what is the function of structure B?
a)
Carries urine away from the kidneys
b)
Stores urine
c)
Eliminates urea, excess water, and some other materials
d)
Carries urine away from body and eliminates it
20.
There are two kidneys, two ureters, one urinary bladder, and one urethra.
a)
True
b)
False
21.

Where in the body are amino acids converted to urea and through which organ is urea excreted?

a)

kidney; liver

b)

kidney; stomach

c)

liver; kidney

d)

liver; stomach

22.

How does blood leaving the kidneys compare to blood entering the kidneys?

a)

A

b)

B

c)

C

d)

D

23.

The body cannot store amino acids. Which flow chart shows what happens to excess amino acids in the body?

a)

A

b)

B

c)

C

d)

D

24.

Which row correctly shows what is excreted from the lungs and the kidneys?

a)

A

b)

B

c)

C

d)

D

25.

The diagram represents the liver and associated blood vessels.


After a meal, how do the levels of glucose and urea in the blood change as the blood passes from X to Y?

a)

decrease; decrease

b)

decrease; increase

c)

increase; decrease

d)

increase; increase

26.

What is NOT an example of excretion?

a)

release of a hormone into a blood

b)

removal of carbon dioxide from the lungs

c)

removal of undigested food from the alimentary canal

d)

release of water from the sweat glands

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