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PREP QUIZ: EXAM 4

Which of the following is true?
Pulmonary edema decreases diffusion distance
Asthma increases the concentration gradient
Emphysema decreases the surface area of the alveoli
None of the above
More than 1 above correct
Which of the following is true about the left shift of the oxygen-hemoglobin curve?
It helps release more O2 to the tissues
It happens when plasma PCO2 = 70mmHg
It helps fetal hemoglobin get more O2
It happens when pH is 5.2
More than 1 above correct
Which of the following is NOT true?
Hemorrhage decrease blood osmolarity
Thirst increases during hemorrhage
ANP increases during dehydration
GFR decreases when blood volume decreases
More than 1 above is incorrect
Which of the following is true?
ADH decreases during dehydration
ADH causes vasoconstriction
ADH decreases the number of aquaporins
ADH triggers aldosterone secretion
None of the above
Which of the following is NOT correct?
Lung PO2 is 100mmHg
Alveolar PO2 decreases to 85mmHg after exhalation
Tissue PO2 is 40mmHg
Alveolar PO2 after inspiration is 160mmHg
More than 1 incorrect
Which of the following is true about the medulla?
It contains the pacemaker of the respiratory system
The DRG controls the inspiratory and expiratory muscles
The medullary chemoreceptor controls CO2 and O2 levels
The PRG found in the pons initiates breathing
None of the above
Which of the following does not gets affected during CO poisoning?
Plasma PO2
HbO2
Total blood oxygen
All of the above
None of the above
Which of the following gets affected during anemia?
Plasma PO2
HbO2
Total blood oxygen
More than 1 correct
None of the above
Which of the following will lead to respiratory acidosis?
Type 1 diabetes
Prolonged high intensity exercise
Hypoventilation
Panic attack
None of the above
During metabolic acidosis
Respiratory rate increases to compensate
Type B cells reabsorb more HCO3-
Type A cells are activated
Type A cells reabsorb H+
More than 1 correct
Atrial natriuretic peptide (ANP)
Decreases ADH release from the adrenal gland
Activates renin release
Increases GFR
Controls K+ reabsorption
More than 1 correct
Which of the following hormones regulate pH?
ADH
ANP
ANG II
Aldosterone
None of the above
Anti-diuretic hormone (ADH)
Decreases the number of aquaporins
Causes vasoconstriction
Increases Na+ reabsorption
Is released from the adrenal cortex
Increases aldosterone release
Which of the following is true about secretion?
It occurs only in the DCT and collecting duct
It is a regulated process
Water gets secreted when a person is over-hydrated
Is not heavily dependent on active transport
It only occurs in the loop of Henle
Which of the following statements is NOT correct about hemorrhage?
Decreases GFR
Decreases blood osmolarity
Increases thirst
Increases ADH
Decreases ANP
With respect to glucose;
It can be secreted in the kidney in diabetes
The Na/Glu symporter is used reabsorption
It never reaches transport maximum
Rate of excretion is bigger than the rate of filtration
More than 1 correct
The main difference between mild and severe dehydration is that in severe dehydration,
Renin release decreases
Aldosterone release decrease
ANP release increases
Sympathetic output decreases
None of the above
Glomerular filtration rate (GFR)
Is mainly regulated by the tubuloglomerular feedback in the afferent arteriole
Is mainly regulated by neural activity
Increases when blood pressure decreases
It is mainly regulated by the release of renin
None of the above
Which of the following is true about filtration?
Red blood cells are filtered
It is not a highly selective process
The driving force is the hydrostatic pressure in the glomerulus
It occurs in the peritubular capillaries
More than 1 correct
It is a net secretion if clearance is greater than GFR.
True
False
A cell with a PO2 of 20mmHg will get more O2 from the blood than a normal resting cell.
True
False
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