HCS 215 final multiple choice questions with complete
solutions
a person has the following symptoms:pH=7.48 Pco2=44 plasma
bicarb conc=27 Correct Answers metabolic alkalosis
a rise in the arterial PCO2 triggers an increase in ventilation by
stimulating both central and peripheral chemoreceptors. the
response of central chemoreceptors is due to? Correct Answers
diffusion of CO2 into brain extracellular fluid, which reacts with
H2O to form H2 ions, which stimulate chemoreceptors directly
A substance S is freely filterable and is excreted at a rate (in
moles/min) that is lower than the filtered load. ON the basis of
this information alone, which of the following is most precise
conclusion that can justifiably be drawn regarding the kidneys
Correct Answers S is definitely reabsorbed and may be
secreted
an increase in mean arterial pressure (MAP) stimulates Correct
Answers increased water excretion in urine
As a result of Starling's law, stroke volume should increase
following an increase in Correct Answers preload
As a wave of action potentials travels from the atria to the
ventricles is is momentarily delayed about 0.1 second as a result
to slow conduction through Correct Answers the AV node
assume that fluid enters the distal tubule with an osmolarity of
100 mOsm, and that the maximum osmolarity of medullary
interstitial fluids is 1100 mOsm. as plasma ADH levels rise, the
, osmolarity of the urine Correct Answers approaches 1100
mOsm as an upper limit
assuming that arterial p co2 is normal, metabolic acidosis
promotes which of the following Correct Answers -increased
H ion secretion by the renal tubule-increased bicarbonate
reabsorption
At normal resting PO2 of mixed venous blood, hemoglobin is...
Correct Answers Nearly 75% saturated
because sweat is essentially a salt solution with an osmolarity
lower than that of plasma, severe sweating leads to a reduction
in plasma vol & an increase in plasma osmolarity. How do these
changes affect the secretion of ADH Correct Answers both of
the decrease in plasma volume and the increase in osmolarity
stimulate ADH secretion
Blockage of the flow of bile into the duodenum interferes with
the digestion of which of the following? Correct Answers
lipids only
cells in the ovaries secrete all of the following hormones except
Correct Answers FSH
Contact of blood with collagen triggers... Correct Answers
platelet aggregation and activation of intrinsic clotting cascade
During exercise, carbon dioxide produced by muscle cells
causes vasodilation in skeletal muscle. This is an example of
Correct Answers active hyperemia
solutions
a person has the following symptoms:pH=7.48 Pco2=44 plasma
bicarb conc=27 Correct Answers metabolic alkalosis
a rise in the arterial PCO2 triggers an increase in ventilation by
stimulating both central and peripheral chemoreceptors. the
response of central chemoreceptors is due to? Correct Answers
diffusion of CO2 into brain extracellular fluid, which reacts with
H2O to form H2 ions, which stimulate chemoreceptors directly
A substance S is freely filterable and is excreted at a rate (in
moles/min) that is lower than the filtered load. ON the basis of
this information alone, which of the following is most precise
conclusion that can justifiably be drawn regarding the kidneys
Correct Answers S is definitely reabsorbed and may be
secreted
an increase in mean arterial pressure (MAP) stimulates Correct
Answers increased water excretion in urine
As a result of Starling's law, stroke volume should increase
following an increase in Correct Answers preload
As a wave of action potentials travels from the atria to the
ventricles is is momentarily delayed about 0.1 second as a result
to slow conduction through Correct Answers the AV node
assume that fluid enters the distal tubule with an osmolarity of
100 mOsm, and that the maximum osmolarity of medullary
interstitial fluids is 1100 mOsm. as plasma ADH levels rise, the
, osmolarity of the urine Correct Answers approaches 1100
mOsm as an upper limit
assuming that arterial p co2 is normal, metabolic acidosis
promotes which of the following Correct Answers -increased
H ion secretion by the renal tubule-increased bicarbonate
reabsorption
At normal resting PO2 of mixed venous blood, hemoglobin is...
Correct Answers Nearly 75% saturated
because sweat is essentially a salt solution with an osmolarity
lower than that of plasma, severe sweating leads to a reduction
in plasma vol & an increase in plasma osmolarity. How do these
changes affect the secretion of ADH Correct Answers both of
the decrease in plasma volume and the increase in osmolarity
stimulate ADH secretion
Blockage of the flow of bile into the duodenum interferes with
the digestion of which of the following? Correct Answers
lipids only
cells in the ovaries secrete all of the following hormones except
Correct Answers FSH
Contact of blood with collagen triggers... Correct Answers
platelet aggregation and activation of intrinsic clotting cascade
During exercise, carbon dioxide produced by muscle cells
causes vasodilation in skeletal muscle. This is an example of
Correct Answers active hyperemia
