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Questions &Answers (A+ Guide
Quiz_________________?
A patient was just placed under general anesthesia. He is now awake and telling you he is
having a hard time excreting urine. What is most likely causing the difficulty? -
Anawer✅
Urinary retention due to slowed detrusor muscle
Quiz_________________?
A person is hyperventilating. This falls under what control mechanism? Explain what
hyperventilation accomplishes. -
Anawer✅
- Respiratory control- Hyperventilation is an increase in the respiratory rate, helping to
remove additional CO2. Within minutes increasing amounts of CO2is removed. Removing
CO2 uses up H+ causes the pH to rise (becomes more alkaline) and restores correct blood
pH.
- (Optional) this reaction shifts to the left: CO2+ H2O ↔ H2CO3 ↔ H+ + HCO3-
1
, Quiz_________________?
A person sustained blunt force trauma to the back at the L1 level, with no spinal cord injury.
Would you suspect the kidneys to be damaged? Why or why not? -
Anawer✅
Yes, the kidneys lie between the T-12 and L-3
Quiz_________________?
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? Why or why not? -
Anawer✅
No, the kidneys lie between the T-12 and L-3
Quiz_________________?
After filtration occurs, next blood travels into these vessels. -
Anawer✅
Efferent arteriole
Quiz_________________?
An elderly male is unable to micturate. What is most likely causing the difficulty? -
Anawer✅
Urinary retention due to enlarged prostate
Quiz_________________?
2
, Calculate the net filtration pressure for your patient given the following values. Show your
work. (Not all values listed may be used).
- Capsular pressure= 20
- Hydrostatic pressure = 70
- Colloid osmotic pressure = 30
- GFR= 130 -
Anawer✅
(Outgoing forces - incoming forces)
HP- (COP + Capsular pressure)
70mmHg - (30mmHg +20mmHg))
= 20mmHg (net outward pressure)
Quiz_________________?
Calculate the net filtration pressure for your patient given the following values. Show your
work. (Not all values listed may be used).
- Capsular pressure= 13
- Colloid osmotic pressure = 27
- Hydrostatic pressure = 65
- GFR= 110 -
Anawer✅
(Outgoing forces - incoming forces)
HP- (COP + Capsular pressure)
3