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Worksheets

Human Excretion

Total questions: 17

Worksheet time: 7mins

Name
Class
Date
1.
What is the middle layer of the kidneys called?
a)
medulla
b)
pelvis
c)
cortex
d)
glomerulus
2.
What is the outermost layer of the kidneys?
a)
glomerulus
b)
medulla
c)
pelvis
d)
cortex
3.
The lungs, kidney and skin are all part of the
a)
nervous system
b)
nephron
c)
kidney
d)
excretory system
4.
Which of the following mainly excretes CO2?
a)
skin
b)
kidney
c)
lungs
d)
urethra
5.
These organs are responsible for what?
a)
storing urine
b)
storing water
c)
filtering blood
d)
they don't have a particular job 
6.

The cluster of capillaries within a nephron.

a)

glomerulus

b)

alveoli

c)

aorta

d)

vein

7.

The organ whose excretory functions include detoxification of the blood and formation of urea.

a)

liver

b)

kidney

c)

heart

d)

gall bladder

8.

The waste products produced by cellular life processes the most important of which are carbon dioxide, water, urea and mineral salts.

a)

ATP

b)

metabolic wastes

c)

feces

d)

enzymes

9.

Another term for sweating; removal of water, salt and urea through the sweat glands in the skin.

a)

perspiration

b)

respiration

c)

reabsorption

d)

transport

10.

The functional unit of the kidneys which includes the glomerulus, Bowman's capsule and the Loop of Henle.

a)

arteriole

b)

veinule

c)

alveoli

d)

nephron

11.

A nitrogen waste resulting from the breakdown of the amino acids produced during protein digestion.

a)

carbon dioxide

b)

bile

c)

urea

d)

water

12.
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
13.

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

a)

Glucose

b)

Salt

c)

Water

d)

Urea

14.

The area influenced by hormones in order to regulate water balance in the body.

a)

Loop of Henle

b)

Proximal convoluted tubule

c)

Distal convoluted tubule

d)

Collecting tubule

15.

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

16.

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

17.

The cluster of capillaries within a nephron.

a)

glomerulus

b)

alveoli

c)

aorta

d)

vein