ABCP BASIC SCIENCE EXAM [STUDY GUIDE]
COMPLETE QUESTIONS AND ANSWERS GRADED A+
2024 UPDATE GET IT 100% RIGHT
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 right ventricle occurs primarily in systole.
C. It gives rise to the posterior descending artery.
D. It arises from the right sinus of Valsalva. - (correct answer) C
The primary structural units of proteins are:
A. Pyruvic acids.
B. Conjugated fatty acids.
C. L-amino acids.
D. Ribonucleic acids. - (correct answer) C
Which clotting factor is activated by contact with foreign surfaces,
roughened vascular walls, and platelet aggregates?
A. V (Proaccelerin).
B. XII (Hageman).
C. VIII (Antihemophilic).
D. X (Stuart-Prower). - (correct answer) 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. - (correct answer) A
The normal arterio-venous oxygen difference is approximately:
A. 7 mmHg.
B. 40 mmHg.
C. 5 volumes percent.
D. 14 volumes percent. - (correct answer) C
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. - (correct answer) C
A characteristic of the oxygen-dissociation curve for fetal hemoglobin 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. - (correct answer) D
At a given pO2, increasing the pCO2 results in:
A. More oxygen bound to the hemoglobin.
B. Less oxygen bound to the hemoglobin.
C. No effect on the amount of oxygen bound to the hemoglobin.
D. A decrease of P50. - (correct answer) B
A sample of blood cooled from 37ºC 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. - (correct
answer) A
If the diffusion coefficient for oxygen is 1, the diffusion coefficient for
carbon dioxide is:
A. 20.3.
B. 37.5.
C. 0.81.
, D. 0.20. - (correct answer) A
In 85-95% of patients, the circumflex artery supplies the:
A. Lateral aspect of the left ventricle.
B. Entire posterior surface of the left ventricle.
C. Posterior ventricular septum.
D. Anterior medial papillary muscle. - (correct answer) A
The obtuse marginal artery is a branch of the:
A. Left anterior descending artery.
B. Ramus intermedius.
C. Circumflex artery.
D. Right main coronary artery. - (correct answer) C
Diagonal coronary arteries supply the:
A. Anterior wall of the LV.
B. Lateral wall of the LV.
C. Apex of the LV.
D. Free wall of the RV. - (correct answer) A
Which arterial wall layer is composed of lamellae of smooth muscle and
elastic tissue?
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