A 16-year-old male presents with delayed puberty and low testosterone levels. Laboratory testing reveals low FSH and LH. Which level of dysfunction is most likely?

A patient with renal artery stenosis develops hypertension. Which mechanism explains this finding?

Which hormone primarily increases sodium reabsorption?

Vesicoureteral reflux primarily results from:

A patient presents with hematuria, periorbital edema, and hypertension following a streptococcal infection. Which mechanism best explains this condition?

A 33 year old male presents to the office for new onset flank pain which radiates to the groin for the past 24 hours. The patient reports the pain comes and goes and rates it 10/10. He denies fever, chills, vomiting or diarrhea. He reports occasional nausea. He is not sexually active. His genital exam is normal. His vital signs are normal. His urine shows hematuria with calcium oxalate with the remainder of the test being normal. What is the likely diagnosis?

A 45-year-old woman reports chronic widespread musculoskeletal pain, fatigue, and nonrestorative sleep for 8 months. ESR and CRP are normal. Physical exam reveals multiple tender points without joint swelling.What is the most likely pathophysiology?

A 13-year-old male basketball player presents with anterior knee pain and tenderness at the tibial tuberosity. Pain worsens with jumping.What is the underlying cause?

The best initial imaging study for suspected nephrolithiasis in a nonpregnant adult is:

A 60-year-old patient with chronic kyphosis demonstrates vertebral curvature. What physiologic principle explains this change?