USMLE Step 1 Question of the day #72

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Questions:

Cardiology
1. _______ is a phase of the cardiac cycle that is described as the period between aortic valve opening and closing.

Endocrine
2. Which adrenal glands are atrophied in Cushing’s Syndrome caused by Exogenous Corticosteroids?

Gastrointestinal
3. _______ is an aminosalicylate that is also used to treat Rheumatoid Arthritis and Juvenile Rheumatoid Arthritis.

Biochemistry
4. How many times does DNA loop around a histone octamer?

Renal
5. What type of arteriolosclerosis is seen in Diabetes Mellitus Nephropathy?

Answers:

1. _______ is a phase of the cardiac cycle that is described as the period between aortic valve opening and closing.
A: Systolic Ejection

2. Which adrenal glands are atrophied in Cushing’s Syndrome caused by Exogenous Corticosteroids?
A: Both
Due to exogenous suppression of ACTH.

3.  _______ is an aminosalicylate that is also used to treat Rheumatoid Arthritis and Juvenile Rheumatoid Arthritis.
A: Sulfasalazine
Is a combination of Sulfapyradine (antibacterial) and 5-ASA (anti-inflammatory). Actvated by colonic bacteria.

4. How many times does DNA loop around a histone octamer?
A: Twice

histone octamer

5. What type of arteriolosclerosis is seen in Diabetes Mellitus Nephropathy?
A: Hyaline Arteriolosclerosis
arteriolosclerosis

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