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Which cell type differentiates into macrophages in tissue?

A 16-year-old adolescent presents with comedones, papules, and pustules on the face and upper back.Which combination best explains the pathogenesis?

A patient with anemia has the following labs:MCV: 110 fLLow vitamin B12What type of anemia is most likely?

A patient with a history of ischemic cardiomyopathy presents with fatigue, dyspnea on exertion, and lower extremity edema. Echocardiography reveals an ejection fraction of 30%.Which mechanism contributes to worsening heart failure symptoms?

A 4-year-old child presents with persistent fever for 6 days, conjunctival injection, strawberry tongue, rash, and cervical lymphadenopathy.Which complication is most concerning in Kawasaki Disease?

A patient with heart failure presents with worsening shortness of breath when lying flat and requires multiple pillows to sleep.This symptom is known as:

To move oxygen from the air in the lungs to the tissues, oxygen must diffuse down its partial pressure gradient. Which set of partial pressures of oxygen PO₂ (in mmHg) at the alveolus –> systemic capillaries –> tissues, respectively, best supports oxygen movement from air to tissue?

The intrinsic factor is essential for vitamin absorption in the small intestine, and it is produced by cells in the stomach.Its deficiency can cause megaloblastic and neurologic damage due to impaired DNA synthesis and myelin maintenance. As a result, the patient may present with reduced carrying capacity, leading to fatigue, weakness, shortness of breath, pallor, and tachycardia.  

Which of the organs belong to the right upper quadrant (RUQ) dominantly? Select all that apply.

Image 22: Which image in this image collage represents an endocrine organ that is both endocrine and exocrine in function? Select all that apply.