Board Review 2021 EXAM

Question 1

Which vessels comprise persistent fetal carotid-vertebrobasilar anastamoses?

Answer 1

persistent trigeminal
otic artery
hypoglossal artery
protoatlantal intersegmental artery

Question 2

What is Lambert-Eton Myasthenic syndrome(LEMS)?

Answer 2

• neuromuscular junction disorder
• generation of antibodies against voltage-gated calcium channels (VGCC) on presynaptic nerve terminals, leading to a decrease in acetylcholine (ACh).