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Bianco's Excretion - Getting rid of waste.
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Which component of sweat helps in excretion through the skin?
 
d) All three
 
a) Water
 
b) Salt
 
c) Urea
What is the significance of maintaining homeostasis in the body?
 
a) It ensures stable internal conditions
 
b) It prevents waste build-up
 
c) It regulates fluid balance
 
d) It promotes overall health
What is the purpose of excreting carbon dioxide from the body?
 
d) To facilitate respiration
 
c) To remove toxins
 
b) To maintain pH balance
 
a) To regulate salt levels
Which organ excretes carbon dioxide primarily?
 
b) Lungs
 
a) Kidneys
 
c) Skin
 
d) Liver
What happens to the waste collected by the kidneys?
 
c) It forms urine and is excreted
 
a) It is converted to glucose
 
b) It is stored in the liver
 
d) It is transported to the heart
What is the role of the renal artery in the excretory system?
 
a) Transport blood to the kidneys
 
b) Transport urine to the bladder
 
c) Filter waste from the blood
 
d) Produce urea
What process occurs in the kidneys to produce urine?
 
a) Filtration
 
b) Digestion
 
c) Absorption
 
d) Respiration
How much of the body's oxygen do the kidneys use?
 
c) 25%
 
a) 5%
 
b) 10%
 
d) 50%
What percentage of the body's weight do the kidneys represent?
 
c) 1%
 
a) 5%
 
b) 10%
 
d) 25%
How much urine does the kidneys produce daily on average?
 
b) 1.5 litres
 
a) 0.5 litres
 
c) 3 litres
 
d) 5 litres
What is the approximate volume of blood filtered by the kidneys daily?
 
c) 180 litres
 
b) 100 litres
 
a) 50 litres
 
d) 200 litres
How is urine transported from the kidneys to the bladder?
 
b) Ureter
 
a) Urethra
 
d) Renal vein
 
c) Renal artery
What waste product is separated out by the nephrons?
 
a) Urea
 
b) Glucose
 
c) Oxygen
 
d) Sodium
What is the functional unit of the kidney?
 
a) Nephron
 
b) Ureter
 
c) Bladder
 
d) Urethra
Which region of the kidney is responsible for filtering waste from the blood?
 
a) Renal cortex
 
b) Renal medulla
 
c) Renal pelvis
 
d) Renal artery
What is the shape of the kidneys?
 
b) Bean-shaped
 
a) Round
 
c) Triangular
 
d) Oval
How many kidneys does the human body typically have?
 
b) Two
 
a) One
 
c) Three
 
d) Four
What is the primary function of the lungs in the excretory system?
 
a) Excrete carbon dioxide
 
b) Filter blood
 
c) Produce urine
 
d) Regulate salt levels
Which organs are part of the excretory system?
 
a) Lungs, skin, and kidneys
 
b) Heart, liver, and pancreas
 
c) Stomach, intestines, and bladder
 
d) Brain, spinal cord, and muscles
What is the function of the excretory system?
 
d) All options
 
a) Collect waste
 
b) Regulate fluid and salt levels
 
c) Maintain homeostasis


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