BIOS 242 Week 4 Quiz Exam 2 (Latest
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organ is primarily responsible for urine formation?
A. Liver
B. Kidney
C. Bladder
D. Ureter
Correct Answer: B
Rationale:Kidneys filter blood and form urine through nephrons.
2. What is the outermost layer of the kidney called?
A. Medulla
B. Cortex
C. Pelvis
D. Capsule
Correct Answer: D
Rationale:The renal capsule protects the kidney from injury.
3. Which kidney region contains renal pyramids?
,A. Cortex
B. Medulla
C. Pelvis
D. Capsule
Correct Answer: B
Rationale:The medulla contains pyramids that channel urine.
4. Which structure carries blood into the glomerulus?
A. Efferent arteriole
B. Afferent arteriole
C. Renal vein
D. Peritubular capillaries
Correct Answer: B
Rationale:Afferent arteriole delivers blood for filtration.
5. Which structure carries blood away from the glomerulus?
A. Afferent arteriole
B. Efferent arteriole
C. Renal artery
D. Vasa recta
Correct Answer: B
Rationale:Efferent arteriole regulates filtration pressure.
6. What is the function of the vasa recta?
,A. Filtration
B. Maintain osmotic gradient
C. Secretion
D. Hormone production
Correct Answer: B
Rationale:Helps concentrate urine by preserving medullary
gradient.
7. Which part of the nephron is closest to the glomerulus?
A. Distal tubule
B. Proximal tubule
C. Collecting duct
D. Loop of Henle
Correct Answer: B
Rationale:First segment to receive filtrate.
8. Which process moves water from filtrate back to blood?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
Correct Answer: B
Rationale:Occurs mainly in proximal tubule and loop of Henle.
9. Which process removes waste from blood into filtrate?
, A. Reabsorption
B. Filtration
C. Secretion
D. Diffusion
Correct Answer: C
Rationale:Important for removing toxins and excess ions.
10. Which structure temporarily stores urine?
A. Ureter
B. Kidney
C. Bladder
D. Urethra
Correct Answer: C
Rationale:The bladder expands to hold urine.
11. Which structure transports urine from kidney to bladder?
A. Urethra
B. Ureter
C. Collecting duct
D. Nephron
Correct Answer: B
Rationale:Uses peristalsis to move urine.
12. Which structure allows urine to exit the body?
Update ) Anatomy and
Physiology IV with Lab | Questions &
Answers | 100% Correct | Grade A -
Chamberlain
1. Which organ is primarily responsible for urine formation?
A. Liver
B. Kidney
C. Bladder
D. Ureter
Correct Answer: B
Rationale:Kidneys filter blood and form urine through nephrons.
2. What is the outermost layer of the kidney called?
A. Medulla
B. Cortex
C. Pelvis
D. Capsule
Correct Answer: D
Rationale:The renal capsule protects the kidney from injury.
3. Which kidney region contains renal pyramids?
,A. Cortex
B. Medulla
C. Pelvis
D. Capsule
Correct Answer: B
Rationale:The medulla contains pyramids that channel urine.
4. Which structure carries blood into the glomerulus?
A. Efferent arteriole
B. Afferent arteriole
C. Renal vein
D. Peritubular capillaries
Correct Answer: B
Rationale:Afferent arteriole delivers blood for filtration.
5. Which structure carries blood away from the glomerulus?
A. Afferent arteriole
B. Efferent arteriole
C. Renal artery
D. Vasa recta
Correct Answer: B
Rationale:Efferent arteriole regulates filtration pressure.
6. What is the function of the vasa recta?
,A. Filtration
B. Maintain osmotic gradient
C. Secretion
D. Hormone production
Correct Answer: B
Rationale:Helps concentrate urine by preserving medullary
gradient.
7. Which part of the nephron is closest to the glomerulus?
A. Distal tubule
B. Proximal tubule
C. Collecting duct
D. Loop of Henle
Correct Answer: B
Rationale:First segment to receive filtrate.
8. Which process moves water from filtrate back to blood?
A. Filtration
B. Reabsorption
C. Secretion
D. Excretion
Correct Answer: B
Rationale:Occurs mainly in proximal tubule and loop of Henle.
9. Which process removes waste from blood into filtrate?
, A. Reabsorption
B. Filtration
C. Secretion
D. Diffusion
Correct Answer: C
Rationale:Important for removing toxins and excess ions.
10. Which structure temporarily stores urine?
A. Ureter
B. Kidney
C. Bladder
D. Urethra
Correct Answer: C
Rationale:The bladder expands to hold urine.
11. Which structure transports urine from kidney to bladder?
A. Urethra
B. Ureter
C. Collecting duct
D. Nephron
Correct Answer: B
Rationale:Uses peristalsis to move urine.
12. Which structure allows urine to exit the body?
