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