Q- Which of the following anticoagulant medications works by binding to thrombin and inhibiting it?
A- Heparin
B- Hirudin
C- Ticlopidine
D- Warfarin
Q- In cases of atrial septal defect (ASD), foramen ovale is formed by incomplete development of which one of the following structures?
A- Ostium primum
B- Ostium secundum
C- Septum primum
D- Septum secundum
Q- Which of the following regions of the brain is most likely affected in patients with Huntington’s disease?
A- Anterior frontal lobe
B- Caudate nucleus
C- Substantia nigra
D- Temporal lobe
Hello Dr Muhammad
Had you applied for USMLE Step 1?
USMLE. Step. 1