Urinary System & Renal Physiology
1. Location and Anatomy of the Kidneys
Q1: A person sustained blunt force trauma to the back at the T5 level, with no
spinal cord injury. Would you suspect the kidneys to be damaged?
• A. Yes, because they lie between T3 and T8.
• B. Yes, because they are directly adjacent to T5.
• C. No, because the kidneys lie lower, between T12 and L3.
• D. No, because they are protected by the pelvic girdle.
• Correct Answer: C
• Rationale: The kidneys are anatomically situated between the T-12 and L-3
vertebrae.
Q2: What is the primarily noted structure and purpose of the renal capsule?
• A. It is a muscular sheath that pumps blood into the renal hilum.
• B. It is a protective layer that protects the kidney from injury and infection.
• C. It is a mucosal layer that produces mucus to lubricate urine flow.
• D. It is a network of capillaries where blood filtration begins.
• Correct Answer: B
• Rationale: The renal capsule serves as a protective barrier to shield the
kidney from trauma and infectious agents.
Q3: Which fatty layer lies outside of the renal capsule to protect the kidney from
trauma?
• A. Renal capsule
• B. Renal adipose capsule
, • C. Renal fascia
• D. Peritoneum
• Correct Answer: B
• Rationale: The renal adipose capsule is the specific fatty layer outside the
renal capsule that cushions the kidney from trauma.
2. Renal Vasculature
Q4: Which of these blood vessels flow directly in between the renal pyramids?
• A. Afferent arterioles
• B. Lobar arteries
• C. Interlobar arteries
• D. Arcuate arteries
• Correct Answer: C
• Rationale: Interlobar arteries are the specific vascular branches that run
between the renal pyramids.
Q5: Interlobular veins converge directly to form which of the following vessels?
• A. Efferent arterioles
• B. Lobar veins
• C. Arcuate veins
• D. Peritubular capillaries
• Correct Answer: C
• Rationale: Venous return from interlobular veins flows directly into the
arcuate veins.