A 10-month-old boy present for complaints of “screaming episodes” for the past 24 hours. He appears well except for episodes of screaming with flexion of the hips and knees about every 25-30 minutes. The episodes last < 1 minute and he appears well again right after. He has had 2 episodes of non-bilious vomiting. Parents deny fever, blood in stool or vomit. Vital signs and hydration are normal. On exam, he has hyperactive bowel sounds in the right upper quadrant. His abdomen is not notable tender. Rectal and stool exams are negative for blood. What is the BEST next step in management?

A 3-year-old boy is evaluated by a pediatrician for symptoms of malabsorption. Since age 5-months, he has had bulky, strong-smelling stools with painful abdominal bloating and flatulence after eating breakfast each morning. He is currently eating a normal diet but appears malnourished. On physical exam, his abdomen is distended. If you ordered an intestinal biopsy, which of the following findings would most likely be present?

This major mineral works with Sodium to maintain a balance by remaining in the intracellular water of cells:

When microbes are in a close nutritional relationship and one benefits but the other is not harmed, it is called

The enzyme that can proofread replicating DNA, detect incorrect bases, excise them, and correctly replace them is

The Renin-Angiotensin-Aldosterone System aids in the correction of hypovolemia works as a negative feedback system. It works to increase blood volume by:

Hip fractures are one of the most common incidences that occur with Osteoporosis that is due to a deficiency in calcium. Which individual is most susceptible to this condition?

This mineral is associated with hemoglobin and aids in transporting oxygen to lungs, tissues, and organs:

One of the principal viral capsid shapes is a 20-sided figure with 12 evenly spaced corners referred to as a/an _________ capsid.

Excessive prolonged vomiting can cause too much Hydrochloric acid, a gastric juice, to be expelled. This may cause a deficiency in what mineral?