Formation Of Urine System Quiz
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The excretion process is necessary for the removal of some waste products from our bodies in all living things; play this informative Urine formation quiz to see what you know about the topic. The quiz contains various questions ranging from easy, medium, to hard levels that will clarify all your concepts about the topic. If you like this quiz, do share it with your friends and family. All the best!
Questions and Answers
- 1.
Which of the following is not considered an excretory organ?
- A.
Digestive
- B.
Skin
- C.
Muscular
- D.
Respiratory
Correct Answer
C. MuscularExplanation
The muscular system is not considered an excretory organ because its main function is to enable movement and provide support to the body. While the muscles do produce waste products such as lactic acid during exercise, these waste products are not excreted from the body in the same way as other excretory organs. The excretory organs are responsible for eliminating metabolic waste and toxins from the body, such as the kidneys filtering waste from the blood and the lungs expelling carbon dioxide.Rate this question:
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- 2.
The blood-filtration unit inside a kidney is known as a :
- A.
Hilus
- B.
Renal pyramid
- C.
Nephron
- D.
Medulla
Correct Answer
C. NephronExplanation
The blood-filtration unit inside a kidney is known as a nephron. A nephron is a microscopic structure that is responsible for filtering waste products from the blood and producing urine. It consists of a renal corpuscle, which includes the glomerulus and Bowman's capsule, and a renal tubule. The renal tubule further processes the filtrate by reabsorbing essential substances and secreting waste products. The nephron plays a crucial role in maintaining the body's fluid balance, regulating blood pressure, and excreting waste materials.Rate this question:
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- 3.
The function of the ureter is to:
- A.
Propel urine from the bladder to the exterior
- B.
Store urine
- C.
Filter impurities
- D.
Propel urine from the kidneys to the bladder
Correct Answer
D. Propel urine from the kidneys to the bladderExplanation
The ureter is a tube-like structure that connects the kidneys to the bladder. Its main function is to transport urine from the kidneys, where it is produced, to the bladder, where it is stored. This transportation is achieved through peristaltic contractions of the smooth muscles in the walls of the ureter, which propel the urine in a one-way direction towards the bladder. Therefore, the correct answer is "Propel urine from the kidneys to the bladder."Rate this question:
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- 4.
The bladder is situated :
- A.
In the abdominal cavity behind the intestines
- B.
In the pelvic cavity behind the symphysis pubis
- C.
On the posterior of the abdominal cavity
- D.
Behind the urethra
Correct Answer
B. In the pelvic cavity behind the symphysis pubisExplanation
The bladder is situated in the pelvic cavity behind the symphysis pubis. This is the correct answer because the bladder is a hollow organ located in the lower abdomen, specifically in the pelvic region. It is positioned behind the symphysis pubis, which is a bony structure in the front of the pelvis. This location allows the bladder to be easily accessible for the storage and elimination of urine.Rate this question:
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- 5.
The hormone responsible for controlling water reabsorption in the kidneys is:
- A.
Insulin
- B.
Antidiuretic hormone (ADH)
- C.
Oxytocin
- D.
Adrenocorticotrophic hormone
Correct Answer
B. Antidiuretic hormone (ADH)Explanation
Antidiuretic hormone (ADH) is responsible for controlling water reabsorption in the kidneys. When the body needs to conserve water, ADH is released by the pituitary gland and acts on the kidneys to increase water reabsorption. This hormone helps to reduce urine production and maintain the body's water balance. Insulin is responsible for regulating blood sugar levels, oxytocin is involved in childbirth and breastfeeding, and adrenocorticotrophic hormone is involved in the regulation of stress and metabolism.Rate this question:
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- 6.
Which of the following affects fluid balance?
- A.
Diet
- B.
Body temperature
- C.
Blood pressure
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
All of the options mentioned in the question - diet, body temperature, and blood pressure - affect fluid balance. Diet plays a crucial role as the intake of fluids and electrolytes through food and beverages affects the body's hydration levels. Body temperature regulation is essential for maintaining fluid balance as sweating and evaporation can cause fluid loss. Blood pressure also plays a role as it affects the movement of fluids within the body. Therefore, all of these factors have an impact on fluid balance.Rate this question:
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- 7.
Which of the following also serves as a conducting channel for semen in a male?
- A.
Urethra
- B.
Ureter
- C.
Bladder
- D.
None of the above
Correct Answer
A. UrethraExplanation
The urethra serves as a conducting channel for semen in a male. It is a tube that connects the urinary bladder to the external urethral orifice, allowing both urine and semen to pass through. The ureter is a tube that connects the kidneys to the urinary bladder and does not play a role in conducting semen. The bladder is a storage organ for urine and does not serve as a conducting channel for semen. Therefore, the correct answer is urethra.Rate this question:
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- 8.
Due to the presence of the liver, which kidney is slightly higher?
- A.
Right
- B.
Left
- C.
Both 1 and 2
- D.
Neither 1 nor 2
Correct Answer
A. RightExplanation
The liver is located on the right side of the body, which causes the right kidney to be slightly higher than the left kidney. This is because the liver takes up space and pushes the right kidney upwards. Therefore, the correct answer is "Right."Rate this question:
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- 9.
In which part of the kidney is the urine collected before being drained into the ureter?
- A.
Medulla
- B.
Cortex
- C.
Renal pyramid
- D.
Renal pelvis
Correct Answer
D. Renal pelvisExplanation
The renal pelvis is the part of the kidney where urine is collected before being drained into the ureter. It is a funnel-shaped structure that is located at the innermost part of the kidney. The renal pelvis receives urine from the collecting ducts in the renal pyramids and funnels it into the ureter, which then carries the urine to the bladder for storage and eventual elimination.Rate this question:
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- 10.
What is the area of the kidney called where renal blood vessels leave and enter the kidney?
- A.
Renal pelvis
- B.
Renal pyramid
- C.
Hilus
- D.
Medulla
Correct Answer
C. HilusExplanation
The hilus is the correct answer because it is the area of the kidney where the renal blood vessels, such as the renal artery and renal vein, enter and leave the kidney. The hilus is a concave region on the medial surface of the kidney where these blood vessels, as well as the ureter, connect to the kidney. It serves as the entry and exit point for these important structures, allowing for the transport of blood and urine to and from the kidney.Rate this question:
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- 11.
What is the sac called which encloses the glomerulus?
- A.
Nephron
- B.
Renal
- C.
Bowman's
- D.
Loop of Henle
Correct Answer
C. Bowman'sExplanation
The sac that encloses the glomerulus is called Bowman's capsule. It is a cup-shaped structure in the nephron of the kidney that surrounds the glomerulus. The Bowman's capsule is responsible for the initial filtration of blood as it enters the nephron, allowing waste products and excess fluids to be removed from the blood and eventually excreted as urine.Rate this question:
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- 12.
When blood pressure increases, what happens to the volume of urine?
- A.
Decreases
- B.
Increases
- C.
Remains stable
- D.
None of the above
Correct Answer
B. IncreasesExplanation
When blood pressure increases, it leads to an increase in the filtration of blood in the kidneys. This increased filtration results in an increased production of urine, leading to an increase in the volume of urine. Therefore, the correct answer is "Increases."Rate this question:
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- 13.
What pH does urine have?
- A.
Acidic
- B.
Neutral
- C.
Alkaline
- D.
None of the above
Correct Answer
A. AcidicExplanation
Urine is typically slightly acidic, with a pH ranging from 5 to 7. This is due to the presence of various waste products and metabolic byproducts, such as uric acid and ammonium ions, which contribute to the acidity of urine. The acidic pH of urine helps in preventing the growth of bacteria and maintaining a healthy urinary tract.Rate this question:
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- 14.
Which part of the urinary system is a storage organ for urine?
- A.
Kidney
- B.
Bladder
- C.
Ureter
- D.
Urethra
Correct Answer
B. BladderExplanation
The bladder is a storage organ for urine in the urinary system. It receives urine from the kidneys through the ureters and temporarily holds it until it is ready to be eliminated from the body through the urethra. The bladder can expand and contract to accommodate varying amounts of urine, allowing for control over when and where urination occurs.Rate this question:
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- 15.
Blood enters the kidney through which blood vessels?
- A.
Renal artery
- B.
Renal vein
- C.
Aorta
- D.
Vena cava
Correct Answer
A. Renal arteryExplanation
The correct answer is the renal artery. The renal artery is responsible for carrying oxygenated blood from the heart to the kidneys. Once the blood enters the kidney through the renal artery, it undergoes filtration and other processes to remove waste products and excess water from the body. After filtration, the cleaned blood exits the kidney through the renal vein and returns to the heart.Rate this question:
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- 16.
What is the main component of urine?
- A.
Salts
- B.
Uric acid / ammonia
- C.
Water
- D.
Urea
Correct Answer
C. WaterExplanation
Urine is mainly composed of water, which makes up the majority of its volume. Water helps to dissolve and carry waste products, such as urea, salts, uric acid, and ammonia, out of the body. These waste products are also present in urine but in smaller quantities compared to water. Therefore, water can be considered as the main component of urine.Rate this question:
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