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Repeated USMLE Questions Step 1- Review- 29

 

Q- Bulging of anterior fontanelle is considered after examination of which one of the following anatomic landmarks?

A- Bregma

B- Lambda

C- Pterion

D- Sagittal suture

Answer

The correct answer is A

Bregma is the intersection between sagittal and coronal sutures which is the site of the anterior fontanelle.



Q- Intramuscular vitamin B12 should be prescribed after gastrectomy. Which of the following gastric cells is responsible for this replacement treatment?

A- Chief cells

B- G cells

C- Goblet cells

D- Parietal cells

Answer

The correct answer is D

Parietal cells produce the intrinsic factor which facilitates vitamin B12 absorption in the terminal ileum. Due to loss of these cells after gastrectomy, replacement therapy of IM vitamin B12 is needed for life.



Q- Which one of the following medical conditions is associated with an arthritis

that resembles ankylosing spondylitis?

A- Celiac disease

B- Crohn’s disease

C- Peptic ulcer

D- Whipple disease

Answer

The correct answer is B

A ten to twenty percent of patients diagnosed with inflammatory bowel diseases such as Crohn’s disease and ulcerative colitis develop this type of arthritis.

Review More Questions For USMLE Step 1



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