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