A 1-Month-Old Boy Is Brought to the Office for Follow-Up

question 714

Multiple Choice

A 1-month-old boy is brought to the office for follow-up of blood-streaked stools and diarrhea.  The patient was born preterm at 35 weeks gestation and had no complications in the newborn nursery.  He had been taking a standard cow's milk-based formula until 2 weeks ago when he developed loose stools streaked with blood and mucus.  Symptoms resolved after changing the formula.  If histopathologic examination had been performed when the patient was symptomatic, which of the following would most likely be seen?

• A)Eosinophilic infiltration in the distal colon
• B)Hemorrhagic necrosis of the bowel wall
• C)Heterotopic gastric mucosa in the distal ileum
• D)Neutrophilic crypt abscess formation in the colon

Understand the structure and function of capillaries and how capillary exchange occurs.

Differentiate between deep and superficial veins and their roles in blood circulation.

Recognize the physiological factors influencing blood flow and pressure.

Identify the venous pathways and their importance in systemic circulation.