Excretory System
Question 1:
Which of the following is NOT a part of the excretory system?
a) Lungs
b) Kidneys
c) Liver
d) Skin
Answer:
c) Liver
Explanation:
Although the liver plays a role in filtering toxins from the blood, it is not considered a part of the excretory system.
Question 2:
Which organ is responsible for filtering waste products from the blood?
a) Lungs
b) Liver
c) Kidneys
d) Bladder
Answer:
c) Kidneys
Explanation:
The kidneys filter waste products from the blood and produce urine.
Question 3:
What is the functional unit of the kidney?
a) Nephron
b) Glomerulus
c) Renal pelvis
d) Ureter
Answer:
a) Nephron
Explanation:
The nephron is the basic functional unit of the kidney, where blood is filtered and urine is produced.
Question 4:
Which hormone regulates the amount of water reabsorbed by the kidneys?
a) Insulin
b) Epinephrine
c) Aldosterone
d) Thyroxine
Answer:
c) Aldosterone
Explanation:
Aldosterone regulates the amount of water and salt reabsorbed by the kidneys.
Question 5:
Where does urine exit the body?
a) Ureter
b) Bladder
c) Urethra
d) Renal pelvis
Answer:
c) Urethra
Explanation:
Urine exits the body through the urethra.
Question 6:
What is the primary function of the bladder?
a) To produce urine
b) To store urine
c) To filter waste products
d) To absorb nutrients
Answer:
b) To store urine
Explanation:
The bladder stores urine until it is ready to be excreted from the body.
Question 7:
Which of the following is NOT a component of urine?
a) Water
b) Urea
c) Glucose
d) Creatinine
Answer:
c) Glucose
Explanation:
Glucose is a nutrient that is reabsorbed by the kidneys and does not normally appear in urine.
Question 8:
What is the name of the tube that carries urine from the kidney to the bladder?
a) Urethra
b) Renal pelvis
c) Ureter
d) Bladder neck
Answer:
c) Ureter
Explanation:
The ureter is a tube that carries urine from the kidney to the bladder.
Question 9:
Which of the following is a condition where the kidneys are unable to filter waste products from the blood?
a) Urinary tract infection
b) Kidney stones
c) Glomerulonephritis
d) Renal failure
Answer:
d) Renal failure
Explanation:
Renal failure is a condition where the kidneys are unable to filter waste products from the blood, leading to a buildup of toxins in the body.
Question 10:
Which of the following is a common symptom of kidney stones?
a) Fever
b) Urinary incontinence
c) Nausea and vomiting
d) Chest pain
Answer:
c) Nausea and vomiting
Explanation:
Kidney stones can cause nausea and vomiting, as well as pain in the lower back or side.
Question 11:
Which of the following is a condition where the bladder does not empty completely?
a) Incontinence
b) Urinary retention
c) Dysuria
d) Hematuria
Answer:
b) Urinary retention
Explanation:
Urinary retention is a condition where the bladder does not empty