Q- Which one of the following conditions most likely occurs during normal delivery when the shoulders of the baby are impacted behind the maternal bony pelvis?
A- Frozen shoulder
B- Rotator cuff tear
C- Shoulder dystocia
Q- Which one of the following nerves would be likely affected if a stab injury is established to the lower brachial plexus (C8-T1)?
A- Axillary nerve
B- Musculocutaneous nerve
C- Radial nerve
D- Ulnar nerve
Q- Megaloblastic anemia is caused by folic acid or Vitamin B12 deficiency. Which of these reactions is directly affected by vitamin B12 deficiency?
A- Malonyl CoA >> palmitate
B- Methylmalonyl CoA >> succinyl CoA
C- Propionyl CoA >> methylmalonyl CoA
D- Succinyl CoA >> fumarate
1 thought on “Repeated USMLE Questions Step 1- 331”
C D D