USMLE Step 1 Question of the day #71

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Questions:

Psychiatry
1. Which neurons are most vulnerable to toxic-metabolic disturbances?

Immunology
2. In which area of the spleen are B cells found?

Reproductive
3. _______ are a subtype of Surface Epithelial Ovarian tumours that are full of mucous-like fluid.

Respiratory
4. _______ are a type of pneumocyte that are squamous and thin, hence they are optimal for gas exchange.

Pharmacology
5. What is the toxicity of Hydroxyurea at the GI tract?

Answers:

1. Which neurons are most vulnerable to toxic-metabolic disturbances?
A: Reticular Activating System (RAS)
Hence, an acute confusional state can occur following anything taht disturbs the body’s homeostasis

2. In which area of the spleen are B cells found?
A: Follicles within the white pulp
B cells

3. _______ are a subtype of Surface Epithelial Ovarian tumours that are full of mucous-like fluid.
A: Mucinous tumours
Lined with mucus-secreting epithelium.
Epithelial Ovarian

4. _______ are a type of pneumocyte that are squamous and thin, hence they are optimal for gas exchange.
A: Type I pneumocytes
97% of the alveolar lining is Type I pneumocytes.

5. What is the toxicity of Hydroxyurea at the GI tract?
A: GI upset

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