RACTICE-ABCP-EXAM-PBSE
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the right coronary artery is said to be dominant when:
a) greater than 80% of coronary venous return is via
the right coronary sinus
b) flow to the RV occurs primarily in systole
c) it gives rise to the posterior descending artery
d) it arises from the right sinus of valsalva
c
the primary structural units of protein are:
a) pyruvic acids
b) conjugated fatty acids
c) L-amino acids
d) ribonucleic acids
c
which clotting factor is activated by contact with
foreign surfaces, roughened walls, and platelet
aggregrates?
a) V (proaccelerin)
b) XII (hageman)
c) VIII (antihemophilic)
d) X (stuart-prower)
b
the effect of plasmin is to:
,a) limit clotting by splitting fibrin
b) initiate the intrinsic pathway
c) cleave thrombin
d) activate the extrinsic pathway
a
the normal arterio-venous oxygen difference is
approximately:
a) 7mmHg
b) 40mmHg
c) 5 volumes percent
d) 14 volumes percent
b
oxygen delivery will be decreased when a low venous
oxygen tension and high venous oxyhemoglobin
saturation are present due to:
a) an increase in p50
b) a decrease in p50
c) metabolic alkalosis
d) metabolic acidosis
b
a characteristic of the oxy-Hgb dissociation curve for
fetal Hgb is that:
a) it is identical to the adult curve
b) it shifts to the right of the maternal curve
c) it is unrelated to the maternal curve
d) it shifts to the left of the maternal curve
d
, at a given pO2, increasing the pCO2 results in:
a) more oxygen bound to the Hgb
b) less oxygen bound to the Hgb
c) no effect on the amount of oxygen bound to the
Hgb
d) a decrease of p50
b
a sample of blood cooled from 37 deg C will undergo
which of the following changes:
a) CO2 becomes more soluble and paCO2 decreases
b) CO2 becomes less soluble and pH decreases
c) CO2 solubility does not change, bicarbonate levels
increase
d) CO2 solubility increases and base excess levels
decrease
a
if the diffusion coefficient for oxygen is 1, the
diffusion coefficient for CO2 is:
a) 20.3
b) 37.5
c) 0.81
d) 0.20
a
in 85-95% of patients, the circumflex artery supplies
the:
a) lateral aspect of the LV
b) entire posterior surface of the LV
Questions with 100% Correct
Answers Latest
the right coronary artery is said to be dominant when:
a) greater than 80% of coronary venous return is via
the right coronary sinus
b) flow to the RV occurs primarily in systole
c) it gives rise to the posterior descending artery
d) it arises from the right sinus of valsalva
c
the primary structural units of protein are:
a) pyruvic acids
b) conjugated fatty acids
c) L-amino acids
d) ribonucleic acids
c
which clotting factor is activated by contact with
foreign surfaces, roughened walls, and platelet
aggregrates?
a) V (proaccelerin)
b) XII (hageman)
c) VIII (antihemophilic)
d) X (stuart-prower)
b
the effect of plasmin is to:
,a) limit clotting by splitting fibrin
b) initiate the intrinsic pathway
c) cleave thrombin
d) activate the extrinsic pathway
a
the normal arterio-venous oxygen difference is
approximately:
a) 7mmHg
b) 40mmHg
c) 5 volumes percent
d) 14 volumes percent
b
oxygen delivery will be decreased when a low venous
oxygen tension and high venous oxyhemoglobin
saturation are present due to:
a) an increase in p50
b) a decrease in p50
c) metabolic alkalosis
d) metabolic acidosis
b
a characteristic of the oxy-Hgb dissociation curve for
fetal Hgb is that:
a) it is identical to the adult curve
b) it shifts to the right of the maternal curve
c) it is unrelated to the maternal curve
d) it shifts to the left of the maternal curve
d
, at a given pO2, increasing the pCO2 results in:
a) more oxygen bound to the Hgb
b) less oxygen bound to the Hgb
c) no effect on the amount of oxygen bound to the
Hgb
d) a decrease of p50
b
a sample of blood cooled from 37 deg C will undergo
which of the following changes:
a) CO2 becomes more soluble and paCO2 decreases
b) CO2 becomes less soluble and pH decreases
c) CO2 solubility does not change, bicarbonate levels
increase
d) CO2 solubility increases and base excess levels
decrease
a
if the diffusion coefficient for oxygen is 1, the
diffusion coefficient for CO2 is:
a) 20.3
b) 37.5
c) 0.81
d) 0.20
a
in 85-95% of patients, the circumflex artery supplies
the:
a) lateral aspect of the LV
b) entire posterior surface of the LV
