Quiz: Excretory System

1. Excretion is the removal of the metabolic wastes of an organism. These wastes must have travelled at one time in the:
A lungs
B blood
C rectum
2. The excretory system consists of:
A rectum, lungs, skin and kidneys
B rectum, liver and kidneys
C lungs, liver, skin and kidneys
3. The wastes excreted from the lungs are:
A carbon dioxide and excess oxygen
B carbon dioxide and nitrogen
C water and carbon dioxide
4. The role of the liver in excretion is the production of urea from:
A ammonia
B uric acid
C fatty acids
5. Examples of nitrogenous wastes are:
A fatty acids and glycerol
B water and carbon dioxide
C urea and uric acid
6. Sweat contains:
A water, excess salt and ammonia
B excess water, excess salt, urea and uric acid
C excess water and salt only
7. The outer layer of the skin is the:
A epiglottis
B dermis
C epidermis
8. The organs responsible for filtering the blood are the:
A kidneys
B intestines
C rectum
9. Approximately how much blood is filtered every day?
A150 to 200 litres
B2 to 3 litres
C1 litre
10. What name is given to the millions of tiny filtering units that make up each kidney?
Anephrons
Btubules
Cfilter organs
11. The tube between the kidney and the urinary bladder is the:
Arenal vein
Burethra
Cureter
12. The tube that carries urine from the bladder to the outside of the body is the:
Arenal vein
Burethra
Cureter
13. What is the name of the circular muscle that controls the flow of urine from the body?
Abladder muscle
Bkidney muscle
Csphincter muscle
14. 'Body balance' of temperature and water salt and glucose levels is correctly termed:
Aperistalsis
Bhomeostasis
Cendometriosis
15. Examples of how the body maintains a constant body temperature are:
Asweating and urination
Bsalt and fibre excretion
C'goose bumps' and glucose excretion

 

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