A 50-year-old woman presents with constant right upper quadrant pain, nausea, and fever for 18 hours. On physical exam, you palpate the right upper quadrant while she takes a deep breath. The patient suddenly stops inhaling due to pain. This finding indicates a positive result for which of the following signs?

A 4-week-old male infant presents with persistent, projectile vomiting after feeding. His mother reports the vomiting has worsened over the past week and that the baby appears hungry immediately afterward. On exam, you note visible peristaltic waves across the upper abdomen and a palpable olive-shaped mass in the right upper quadrant. Which of the following is the most likely diagnosis?

Define thalweg.

Iron (Fe) and Manganese (Mn) are both more soluble and readily available for plant uptake in which form?

Katabatic winds develop because

What are three indicators of bankfull stage?

Mineralization (i.e., ammonification) is the transformation of [orgN] to [ammonium]. 

 Major oceanic surface currents travel 

Riparian wetlands have been found to be poor nutrient filters.

The 3 catecholamines are: