Urea and NaCl primarily contribute to high osmolarity in the renal medulla.
Alan is most likely to be diagnosed with somatoform disorder.
<h3>What is Somatoform disorder?</h3>
This is the type of disorder which is a mental illness and also characterized by various types of symptoms such as body pain.
In this scenario, there was no physiological basis for Allan's complaint. This means the illness is a mental one and the availability of symptoms is why somatoform disorder is the most appropriate choice.
Read more about Somatoform disorder here brainly.com/question/12164980
You got this and you need to keep ur grades up lol <3 keep going I believe in you