Excretory system

Total Questions: 21

1 - Dialysis is process used for cleaning----:

A ) Heart
B ) Gall bladder
C ) Kidneys ✅
D ) Liver

2 - The main function of kidneys is----:

A ) To control blood temperature
B ) To remove waste products from body ✅
C ) To control blood pressure
D ) To help in digestion of food

3 - Nitrogenous wastes excreted through urine in humans is-----:

A ) Uric acid
B ) Urea ✅
C ) Ammonia
D ) None of these

4 - Kidney stones are mainly formed by which of the following compound?

A ) Calcium oxalate ✅
B ) Calcium chloride
C ) Calcium silicate
D ) Calcium oxide

5 - The birds who feed Marine food remove salt from one of ----glands?

A ) Endocrine glands
B ) Rectal salt gland ✅
C ) Pituitary glands
D ) None of these

6 - Which tube among the following joins kidneys and bladder?

A ) Ureter ✅
B ) Urethra
C ) Inferior Vena Cava
D ) Suprapubic Tube

7 - Drugs are exerted through------:

A ) Stomach
B ) Liver
C ) Kidney ✅
D ) None of these

8 - The removal of carbon dioxide, urine and sweat is a process of------?

A ) Digestion
B ) Respiration
C ) Excretion ✅
D ) Emissions

10 - How many nephrons does each kidney contain approximately?

A ) 1 million ✅
B ) 2 million
C ) 5 million
D ) 10 million

11 - Which organ controls the balance of pH in the blood?

A ) Heart
B ) Liver
C ) Kidney ✅
D ) Spleen

12 - The urinary bladder stores urine for----:

A ) 1-2 hours
B ) 3-5 hours ✅
C ) 5-7 hours
D ) 8-10 hours

13 - Which vitamin is activated in the kidneys?

A ) Vitamin A
B ) Vitamin B
C ) Vitamin C
D ) Vitamin D ✅

14 - What is the maximum capacity of the adult urinary bladder?

A ) 250 ml
B ) 500 ml ✅
C ) 750 ml
D ) 1 liter

15 - What is the proximate length of the ureter?

A ) 10 cm
B ) 20 cm
C ) 26 cm ✅
D ) 30 cm

16 - What is the average size of kidney?

A ) 8-10 cm
B ) 10-13 cm ✅
C ) 12-15 cm
D ) 15-18 cm

17 - What function do the kidneys perform regarding fluid and electrolyte balance?

A ) Filter waste from the blood
B ) Regulate blood sugar levels
C ) Regulate salt, water and chemicals in the body ✅
D ) Produce hormones for red blood cell production

18 - Which hormone related function do the kidneys perform?

A ) Stimulate bone marrow to make red blood cells and control blood pressure ✅
B ) Control hunger and thirst
C ) Produce insulin and control glucose levels
D ) Regulate body temperature

19 - What is the role of glomerulus in the nephron?

A ) Pull out additional wastes
B ) Store urine
C ) Return needed substance to the blood
D ) Filter the blood ✅

20 - What happens to wastes and extra water in the nephron?

A ) They are stored in bladder
B ) They are returned to the blood
C ) They become urine ✅
D ) They are used by the body

21 - Bowman's capsule is part of which unit in the kidney?

A ) Glomerulus
B ) Tubule
C ) Nephron ✅
D ) Renal pelvis