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Worksheets

Urinary System

Total questions: 28

Worksheet time: 27mins

Name
Class
Date
1.

The organ that removes metabolic wastes including urea, excess water, and salts from the blood.

a)

lung

b)

liver

c)

kidney

d)

colon

2.
Which of the following parts is not found in the urinary system?
a)
Ureters
b)
Urethra
c)
Bladder
d)
Rectum 
3.

Which number is the urinary bladder?

a)

1

b)

2

c)

3

4.

Which number is the ureter?

a)

1

b)

2

c)

3

5.

Which number is the kidney?

a)

1

b)

2

c)

3

6.

Which structure is responsible for filtering blood?

a)

1

b)

2

c)

3

7.

Which structure is responsible for storing urine?

a)

1

b)

2

c)

3

8.

Which structure is responsible for transporting urine?

a)

1

b)

2

c)

3

9.

Which structure is the medulla?

a)

1

b)

2

c)

3

d)

4

e)

None of these

10.

Which structure is the renal artery?

a)

1

b)

2

c)

3

d)

4

e)

None of these

11.

Which structure is the renal vein?

a)

1

b)

2

c)

3

d)

4

e)

None of these

12.

Which structure is the minor calyx?

a)

1

b)

2

c)

3

d)

4

e)

None of these

13.

Which structure is the cortex?

a)

1

b)

2

c)

3

d)

4

e)

None of these

14.
In addition to water, the principal components of urine are
a)
amino acids and fatty acids
b)
urea and salts
c)
ammonia and bile
d)
hydrochloric acid and bases
15.
After reabsorption in nephrons is completed, the fluid that is left in the tubules is transported to the
a)
Bowman's capsule
b)
circulatory system
c)
urinary bladder
d)
bile duct
16.
The diagram represents a nephron. Which process takes place in region A?
a)
Proteins are converted to urea.
b)
Substances are filtered out of the glomerulus.
c)
Urine is stored temporarily.
d)
Water is reabsorbed into the blood.
17.

The excretory system is responsible for moving toxic wastes, dissolved molecules, and excess heat. You would conclude that the excretory system contributes to

a)

circulating molecules around the body

b)

maintaining homeostasis in the body

c)

producing egg and sperm cells in the body

d)

gas exchange

18.
Which sequence represents the correct pathway for the removal of urine from the human body?
a)
kidney → ureter → urinary bladder → urethra
b)
kidney → urethra → urinary bladder → ureter
c)
ureter → kidney → urinary bladder → urethra
d)
urethra → kidney → urinary bladder → ureter
19.
As urine is excreted, muscle contractions of the urinary bladder will cause the urine to pass into the
a)
ureter
b)
glomerulus
c)
urethra
d)
Bowman's capsule
20.
The nephron is the structural unit of the human
a)
lung
b)
liver
c)
kidney
d)
intestine
21.
What is the main function of a nephron?
a)
It breaks down red blood cells to form nitrogenous wastes.
b)
It regulates the chemical composition of the blood.
c)
 It forms urea from the waste products of protein metabolism.
d)
It absorbs digested food from the contents of the small intestine.
22.

The path urine takes after it is formed until it leaves the body is the urethra, urinary bladder, and finally the ureter.

a)
b)
23.

The urinary bladder is composed of ________ epithelium.

a)

transitional

b)

simple squamous

c)

stratified squamous

d)

pseudostratified columnar

24.

Which of the choices below is NOT a function of the urinary system?

a)

helps maintain homeostasis by controlling the composition, volume, and pressure of blood

b)

regulates blood glucose levels and produces hormones

c)

maintains blood osmolarity

d)

eliminates solid, undigested wastes and excretes carbon dioxide, water, salts, and heat

25.

Which of the following acts as the trigger for the initiation of micturition (voiding/urinating)?

a)

the stretching of the bladder wall

b)

motor neurons

c)

the pressure of the fluid in the bladder

d)

the sympathetic efferents

26.

The mechanism of water reabsorption by the renal tubules is ________.

a)

active transport

b)

osmosis

c)

filtration

d)

cotransport with sodium ions

27.

Identify the letter representing the glomerulus.

a)

A

b)

B

c)

C

d)

D

e)

E

28.

Identify the letter representing the collecting duct.

a)

A

b)

B

c)

C

d)

D

e)

E