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Excretory System
Test Description: Excretory system review
Instructions: Answer all questions to get your test result.
1) The excretory system helps maintain homeostasis by?
A
Removing solid wastes
B
It does not help maintain homeostasis
C
Expelling excess water only
D
Expelling excess water and wastes
2) What are the main parts of the excretory system?
A
The bladder is the only component of the excretory system
B
The kidneys and nephrons
C
The ureter, urethra and stomach
D
The ureter, urethra, bladder and kidneys
3) What is the average size of the human's kidneys?
A
About 2 inches wide and 6 inches long
B
About 3 inches wide and 5 inches long
C
About the size of a kidney bean
D
About the size of a real live mouse
4) How many nephrons are in the human body?
A
Approximate 1 000 nephrons per kidney
B
Two nephrons, one for each kidney
C
About 100 000 nephrons per kidneys
D
About 500 nephrons per kidneys
5) What structure is at the beginning of the nephron?
A
The Proximal Convoluted Tubule
B
The Distal Convoluted Tubule
C
The Collecting Duct
D
The Bowman's Capsule
6) Where are your kidneys located?
A
On either side of the bladder
B
One on each side of the vertebral column
C
Inside the vertebral column
D
Underneath the lungs
7) The kidney's role's in the excretory system is to?
A
Deliver urine directly to the bladder
B
Add water to the urine to dilute it
C
Maintain the proper water balance
D
Help remove wastes, balance blood pH and maintain water balance
8) How many kidneys do humans have?
A
Four
B
It depends, anywhere from 1 - 4 kidneys
C
Only one, its split into two hemispheres
D
Two
9) Blood enters the kidneys via the?
A
Ureter
B
Urethra
C
Renal Vein
D
Renal Artery
10) The excretory system is also called the?
A
It has no other name
B
Waste Removal System
C
The septic system
D
Urinary system
*select an answer for all questions
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